# Compare Mailbird vs Thunderbird 2026 | Capterra

> Unsure of what to choose? Check Capterra to compare Mailbird and Thunderbird based on pricing, features, product details, and verified reviews.

Source: https://www.capterra.com/compare/160517-230507/Mailbird-vs-Thunderbird

---

# Mailbird vs Thunderbird Features and Cost Comparison

Last updated March 13th, 2026

Provider data verified by our Software Research team, and reviews  
moderated by our Reviews Verification team.[Learn more](https://www.capterra.com/our-story/)

Your comparison:

MailbirdThunderbird2/4 selected

[Mailbird](https://www.capterra.com/p/160517/Mailbird/)[4.4 (394)](https://www.capterra.com/p/160517/Mailbird/reviews/)

[Thunderbird](https://www.capterra.com/p/230507/Thunderbird/)[4.4 (159)](https://www.capterra.com/p/230507/Thunderbird/reviews/)

[## Mailbird](https://www.capterra.com/p/160517/Mailbird/)[4.4 (394)](https://www.capterra.com/p/160517/Mailbird/reviews/)

Starting Price

$2.28/year

Value-for-Money

4.3

Functionality

4.3

Ease of Use

4.5

Customer Service

4.1

Reviews Sentiment

Based on [394 reviews](#user-reviews)

Positive

347

Neutral

11

Negative

36

[## Thunderbird](https://www.capterra.com/p/230507/Thunderbird/)[4.4 (159)](https://www.capterra.com/p/230507/Thunderbird/reviews/)

Starting Price

Contact vendor

Value-for-Money

4.7

Functionality

4.3

Ease of Use

4.4

Customer Service

3.7

Reviews Sentiment

Based on [159 reviews](#user-reviews)

Positive

138

Neutral

17

Negative

4

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## Send this comparison chart to my inbox

### Fill out the form and we'll send a list of the top-rated software based on real user reviews directly to your inbox.

## Summary

* * *

Key features rated by users

Features selected based on 11,893 reviews from email management software users.  
about the Fit Score methodology.

Fit Score methodology

Our Fit Score reflects how reviewers rate a product’s performance against a set of features reviewers rate as most important. A higher score indicates the product is rated better in delivering what reviewers most care about.

  

If the Fit Score is not shown for a specific product, that only means there are currently not enough relevant data points to develop a meaningful score. It does not indicate that the product should be excluded from further evaluation. Best for Methodology

\--%Fit

Missing features

Feature ratings

Mobile App

NA

Email Distribution

NA

Inbox Management

4.4

Email Monitoring

4.4

Access Controls/Permissions

NA

\--%Fit

Missing features

Feature ratings

Mobile App

5.0

Email Distribution

NA

Inbox Management

4.5

Email Monitoring

NA

Access Controls/Permissions

NA

User satisfaction

User satisfaction

4.4

User reviews[394](https://www.capterra.com/p/160517/Mailbird/reviews/)

Ease of use

4.5

Functionality

4.3

Value for money

4.3

Customer support

4.1

User satisfaction

4.4

User reviews[159](https://www.capterra.com/p/230507/Thunderbird/reviews/)

Ease of use

4.4

Functionality

4.3

Value for money

4.7

Customer support

3.7

Price starts from

Price starts from

$2.28Per User, Per Year

-   Free version
-   Free trial

Price starts from

\--

-   Free version
-   Free trial

Best for

Best for

Anyone that has Windows PC, has more than one email address. The customers who have reported great success with the tool, have been small business owners, solopreneurs, freelancers, and Marcomms!

Best for

Not provided by vendor

## User reviews

Pros & cons

AR

Azizur R.

Network Operator

> "It works with both Windows and macOS.I can complete tasks quickly because to the clear and simple UI and the abundance of keyboard..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4843492)

SM

Sam M.

Executive

> "For example, if someone schedules a meeting from an O365 account, then cancels it, the cancellation is not processed correctly and..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___7018350)

GP

Giacomo P.

Sales

> "With Mailbird I can manage both mail and other very useful apps for my work from a single program without having to always change..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___5075282)

SM

Sam M.

Executive

> "There is no integration with Teams, so you can't schedule a meeting from MB and put a Teams meeting link in, like you can with..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___7018350)

AR

Azizur R.

Network Operator

> "I can handle several email accounts from one location using MailBird, a desktop email client."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4843492)

OD

Olena D.

Kunstlerin

> "However, after realizing that it’s a scam, I can't rate this app either positively or negatively because fraud can only be rated..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___6453155)

WP

Wiktor P.

Educator

> "I hold mail managment, organization, delivery status, character of notifications in a high regard."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4843738)

WLD

W Lawrence D.

CEO

> "They will send you a GPT response that has nothing to do with your question or the person answering cannot speak English or is not..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___5075871)

BD

Bill D.

Digital Marketer

> "I like a unified email account that consolidates all my Gmail accounts in one place."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___5080307)

OD

Olena D.

Kunstlerin

> "After 9 months, they started extorting money."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___6453155)

Rafa M.

audio technical

> "It greatly streamlines the task of managing my professional contacts on a day-to-day basis."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4893307)

ES

Erika S.

Owner

> "I also find the Chrome and facebook integrations glitchy - when I had them integrated and would open a link in Mailbird, I could..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#GetApp___4708263)

CN

Cameron N.

Owner

> "Love that it's simplified, love that I can customize and add other communication apps like Teams, Slack, etc. but it needs less..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___4562852)

GC

Gerald C.

General Manager

> "The only way to get these stuck emails to send is to press Ctrl+Shift, click on hamburger menu, then click on debug, the program..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___3589530)

BD

Bill D.

Digital Marketer

> "I like the integration with Evernote and Facebook helps my productivity."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___5080307)

EL

Elias L.

CEO

> "In conclusion, although I appreciate the improvements in Mailbird 3, the unanticipated additional cost has left me feeling..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#GetApp___6011526)

EL

Elias L.

CEO

> "The introduction of Mailbird 3, undeniably a more advanced and promising version, has come with an unexpected twist."

[See full review](https://www.capterra.com/p/160517/Mailbird/#GetApp___6011526)

BD

Bill D.

Digital Marketer

> "Currently, I have spam coming to me from different variations of @xxxxxxxxxxxxxxfacebookmailcom."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___5080307)

NP

Nicolas P.

IT Manager

> "Easy to use, quick install, quick manegement and small price"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___6742356)

WP

Wiktor P.

Educator

> "Search/filter feature is definately the worst part of MailBird."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4843738)

JB

Juanita B.

Owner

> "Easy to read and set up, able to display emails in the order that is best suited to you."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___6197195)

GR

Gary R.

O/O

> "The emails keep returning and I have to go through hoops to TRY and delete them."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4894822)

CmH

Clément H.

Business owner

> "I especially like the mailboxes management that lets us monitor our different mailboxes in one glance."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4292907)

WLD

W Lawrence D.

CEO

> "You will have to ask your question 3-4 times before they actually read it and answer you. "

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___5075871)

JP

James P.

retired

> "I like all the storage files this email has."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___6213337)

RR

Rishi R.

CEO

> "To the founders reading this review - this is not how you become a successful tech company!"

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___6796293)

AR

Abdelaziz R.

Social Media Manager

> "Navigation is very smooth, and it integrates many 3rd party applications to go along with Windows."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4140296)

JV

Joel V.

\-

> "Unhonest company attitude in unilaterally changing the conditions under which they made the sale."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___6039859)

BK

Beta K.

founder

> "Overall, Mailbird is a useful email client for users who want to manage their email accounts from a single application."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4359189)

SE

Sarah E.

occupational therapist

> "On my last attempt they said my log file was too dangerous to open and I should try creating a new log file to send them, as the..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___4618331)

CB

Cory B.

COO

> "I was excited to test new versions and use 3.0."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___6006143)

MD

Martyn D.

Tech Support

> "It is no longer honouring the lifetime licenses."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___6142674)

Greg B.

National Sales Manager

> "Easy to setup and handles more than one email account."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___6097952)

CmH

Clément H.

Business owner

> "The text processing is also quite catastrophic with erratic behaviour when it comes to formatting the text. But after all, why not?"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4292907)

JP

James P.

retired

> "Overall, it has been pretty much maintenance free."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___6213337)

GC

Gerald C.

General Manager

> "The fact that there appears to be an inherent problem with the SMTP portion of this program, been like this since day one and the..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___3589530)

RE

Roman E.

Data Engineer

> "I use it for my work and my private account and it is very helpful to see both of them in one app."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4242770)

WLD

W Lawrence D.

CEO

> "Tech support is useless. "

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___5075871)

EL

Elias L.

CEO

> "As a user of Mailbird 2, I was genuinely excited when I purchased the lifetime deal."

[See full review](https://www.capterra.com/p/160517/Mailbird/#GetApp___6011526)

GC

Gerald C.

General Manager

> "Bad, we own 6 or more seats of the business version and this is happening on all the seats."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___3589530)

OG

Olivier G.

CTO

> "My overall satisfaction is at the lower average I fortunately didn't uninstall Thunderbird that keep history not reachable in..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#GetApp___3318562)

VR

Verified Reviewer

Nope

> "They changed their app so the workaround for adding an exchange account seems virtually impossible unless you want to upgrade to..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2972757)

VR

Verified Reviewer

Landing Page Designer

> "I also love their mail tracking, when someone has opened your email already."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4382605)

JS

John S.

Manager

> "unstable, support enquiry leads to end user fault - not cool."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4047218)

BK

Beta K.

founder

> "It has a user-friendly interface and integrates with a number of popular productivity tools."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4359189)

SE

Sarah E.

occupational therapist

> "In general when it works it is a good product, but it does not work consistently and is not reliable."

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___4618331)

VR

Verified Reviewer

CEO

> "I found this software very interesting and helpful for email marketing and management."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3831164)

VR

Verified Reviewer

Nope

> "Things weren’t as advertised and not I’m being bombarded with messages within the app to upgrade to business and I don’t have a..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2972757)

JW

Jenny W.

Office Manager

> "Mailbird saves me so much time by having everything I need all in one place!"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4288981)

Ninos M.

Creative

> "Not able to customise the display font-size.. (not Email typography)"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3232612)

RE

Roman E.

Data Engineer

> "It does a great job of managing multiple accounts."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4242770)

CN

Cameron N.

Owner

> "as an app option! Stop with Google crap!"

[See full review](https://www.capterra.com/p/160517/Mailbird/#SoftwareAdvice___4562852)

VL

Victor L.

Developer

> "Everything you should expect from your mail client is there with a few extra features as well but most importantly I have not..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2985065)

VR

Verified Reviewer

Nope

> "They have absolutely terrible support that fails to seemingly even read your request, let alone addrsss your concerns and help you..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2972757)

JD

Jelle D.

Software Engineer

> "MailBird works amazing, it has great features to customize your mailbox and has never let me down."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3525688)

VR

Verified Reviewer

Nope

> "I immediately remembered upon buying it why I deleted it very soon after… upon writing their customer support really hit home..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2972757)

Leander Jackie G.

Owner

> "It integrates well with most external apps and there is really no deep learning curve. Plus, the themes are pleasant and not..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3254502)

CM

Chris M.

Creative Director/President

> "I was in a pinch, the email client software I was using had a glitch which I couldn't easily fix. "

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2958610)

ME

Matthew E.

Founder

> "I also love how you can see when people have received and opened an email so your not guessing whether they have read it when..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2998946)

VR

Verified Reviewer

Nope

> "Once again, I am not a business and won’t be upgrading just to have my student account with my other four accounts."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2972757)

VR

Verified Reviewer

Landing Page Designer

> "Filtering email is sooo easy with Mailbird."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4382605)

Masturah D.

Administrative Assistant

> "Some of the email server is not working well with this software."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3022907)

SW

Sandra W.

HR Consultant

> "Ease of use, very adaptable to my needs, and it is very easy to organize my emails"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3563867)

VR

Verified Reviewer

Nope

> "It’s not a business and I don’t need business features or to pay for a business plan bc"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2972757)

PM

Peter M.

executive

> "It has all the features that are important for me as I manage more email accounts."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3240612)

JS

John S.

Manager

> "horrible, frustrating, waste of time, waste of money."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4047218)

Spyridon Z.

Electrical Engineer

> "It allows you to use it on up to 3 devices"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3279042)

RW

Richard W.

Ecommerce Specialist

> "Syncing between computers is a little tricky."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3065822)

DB

David B.

Principal Consultant

> "I am able tosee all of my email messages in one place and if I took the time to set it up have the correct signatures for each..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2346928)

SF

Stan F.

Principal

> "THis is all I get: "I have thoroughly investigated the log.log files that you have provided and it seems for some reason Mailbird..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2413406)

ES

Erika S.

Owner

> "I like the interface overall."

[See full review](https://www.capterra.com/p/160517/Mailbird/#GetApp___4708263)

Syed H.

Digital Director

> "Chrome app shows only 1 page we cant add multiple pages like how we use on chrome browser."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2562693)

Tito M.

CEO & Founder

> "It's a very good mailbox client."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3765158)

SF

Stan F.

Principal

> "I understand how frustrating this is not to be able to use your calendar within Mailbird, and I would like to apologise for all..."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2413406)

Ninos M.

Creative

> "It's easy to manage multiple email accounts (Google, Hotmail, and SMTP..)"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___3232612)

TD

Tom D.

Owner

> "Upon arrival in the U.S.A., there were difficulties with sending, deleting emails, and with customer service."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2749285)

ST

Sarah T.

Marketing Manager

> "Mailbird makes this easy."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___4192238)

SH

Stewart H.

ceo

> "A waste of many man hours, I am exhausted trying to debug, write mail bird tickets , running outlook"

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2344899)

CM

Chris M.

Creative Director/President

> "Easy to set up for both POP3 and IMAP email systems and saved me a lot of headaches."

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2958610)

SF

Stan F.

Principal

> "THe inability to get the level of attention to resolve such a critical issue is not acceptable. "

[See full review](https://www.capterra.com/p/160517/Mailbird/#Capterra___2413406)

[View Reviews](https://www.capterra.com/p/160517/Mailbird/reviews/)

Leandro A.

Developer

> "I use it as my main email client , both for personal use and for work , it feels comfortable .Big plus that they don't spam you"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___7054778)

SA

Sara A.

Engineer

> "The settings interface is a bit confusing; in the future 365 email accounts may have issues to works as Thunderbird does not..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6357971)

SP

Stuart P.

Product Manager

> "I was using another free email client that would not let me use different ports for incoming and outgoing mail so when searching..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6880981)

JMV

Jose Miguel V.

Adjunct Professor

> "Aesthetics and UI: For me, this is a big problem. While this is subjective, and the interface can be customized, when you open..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

Leandro A.

Developer

> "Also is open source and doesn't spam you"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___7054778)

RK

Robert K.

drafting

> "some extensions have bugs like send later"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6737417)

JMV

Jose Miguel V.

Adjunct Professor

> "Right now I am using Thunderbird for all my personal emails, and the client has all you need to manage successfully all your..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

JF

Jamie F.

Lead Technician

> "I always when trying to select the top email accidentally click the column header and re-order the emails which is annoying,..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5093745)

MK

Matt K.

Consultant

> "Even when I've had ten or more email addresses to manage for different clients, it's been up to the job and easy to use."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6463718)

SA

Sara A.

Engineer

> "I don't like very much the menu, especially the settings section."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6357971)

Sunny K.

Marketing Manager

> "Additionally, it facilitates the management of multiple email inboxes in a single, convenient location, which can be quite..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#GetApp___6048711)

Brendan B.

Coach

> "I have had certain performance issues that I could not explain or fix."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6799859)

Brendan B.

Coach

> "Free, open, power, highly customizable email client."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6799859)

VR

Verified Reviewer

Operations Analyst

> "Lack of Cloud Integration: Thunderbird does not offer cloud integration, which may limit its usefulness for users who need to..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

JM

Juan M.

SEO supervisor

> "The intuitive user interface makes navigation a breeze, and the seamless integration with my existing email accounts was a huge..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4981089)

UA

Ubed A.

Verification expert

> "However, some users may find Thunderbird's user interface outdated compared to other modern email clients, and it may not..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

DK

Dev K.

Design Engineer

> "This is a best-of-class, open source and Free Software desktop email client that works very well with all necessary email..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6130553)

VR

Verified Reviewer

Operations Analyst

> "Limited Mobile Support: Thunderbird does not have a dedicated mobile app, which may make it difficult for users to access their..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

JMV

Jose Miguel V.

Adjunct Professor

> "Another great addition of the last years was the "Smart folders," making your multiple account inbox easier to visit and search."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

VR

Verified Reviewer

Operations Analyst

> "Limited Customer Support: Thunderbird is an open-source project, which means that customer support is limited and users may have..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

Sunny K.

Marketing Manager

> "I have set up multiple accounts in Thunderbird, making it convenient for me to receive emails in one place."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#GetApp___6048711)

VR

Verified Reviewer

Operations Analyst

> "Complex User Interface: Some users may find Thunderbird's user interface to be complex and difficult to navigate, especially if..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

UA

Ubed A.

Verification expert

> "Security and privacy: Thunderbird includes features such as encryption, phishing protection, and spam filtering that enhance..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

JMV

Jose Miguel V.

Adjunct Professor

> "This one was my first problem after I switch from Microsoft Outlook."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

VR

Verified Reviewer

Operations Analyst

> "Customizable: Thunderbird Mail is highly customizable, allowing users to personalize their email experience by choosing from a..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

VR

Verified Reviewer

DAM Expert

> "No support per email or phone."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5001917)

MK

Matt K.

Consultant

> "It's been my go-to desktop email client for twenty years."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6463718)

MT

Monica T.

Project Manager

> "Sometimes when there are a lot of emails coming in it gets stuck, and from time to time I need to delete some of the emails."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3808513)

DM

Davide M.

Indie Game Developer

> "I've benn using Thunderbird for several years and have had an overall positive experience with the software. While there are..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5081958)

UA

Ubed A.

Verification expert

> "Lack of support: Thunderbird is maintained by a small community of developers, so users may not receive prompt support or..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

NP

Nicolas P.

IT Manager

> "Very simple to use but could be configurated to have lots of stuff"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6805419)

Robert M.

Freelancer

> "I do not know why they have separated outgoing server settings in another section from the account setting."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3763863)

Austin M.

Software Analyst

> "I think the most impactful thing about Thunderbird is the community that uses the software, making it evolve constantly and..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5079584)

Robert M.

Freelancer

> "The search and filter are not very functional, and I could not find my desired result from it."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3763863)

AR

Ari R.

CEO

> "nice interface;- calendar built in (very well thought out);- tabs for better viewing;- mail and calendar pane in one single..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4153313)

VR

Verified Reviewer

Operations Analyst

> "However, some users may find the user interface to be complex and the performance to be slow on older computers."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

UA

Ubed A.

Verification expert

> "Additionally, Thunderbird's ability to manage multiple email accounts from different providers, including POP, IMAP, and..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

DS

David S.

Tech Acct MGR

> "Setting up Microsoft exchange inside of Thunderbird is difficult if you do not know what you're doing there really is no work..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3834541)

VR

Verified Reviewer

Consultant / developer

> "Thunderbird is full of features, customizable with addons and themeable."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842831)

VR

Verified Reviewer

CEO

> "The calendar and all the addons can't compete with Google or other alternatives."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4580663)

UA

Ubed A.

Verification expert

> "Thunderbird offers a wide range of add-ons and extensions that allow users to customize the program according to their needs."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

Gonzalo M.

Managing Director

> "Integrates less well into Windows than some alternatives."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3712769)

Sunny K.

Marketing Manager

> "It accommodates various mail types and allows for easy configuration."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#GetApp___6048711)

TB

Tanya B.

Technician

> "One thing i particullarly hated was the fact that the program was crashing on me from time to time."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4620389)

UA

Ubed A.

Verification expert

> "Its free and open-source software status and cross-platform support also make it a popular choice for users across different..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

Gustavo B.

Director

> "It does not offer any cloud based system that might allow the software to be used away from where it was installed and..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3484995)

Hugo G.

Software developer and support

> "Overall pleased but I'll like to see it improved"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6805669)

James C.

Sales and Marketing

> "Sometimes I had difficulty and slowness to do more specific searches, using keywords that were in the body of the email."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3444626)

JM

Juan M.

SEO supervisor

> "Thunderbird has truly revolutionized the way I manage my inbox, and I couldn't be more impressed."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4981089)

JD

Jacob D.

Executive

> "Namely, half the time when you repond, the reply won't be shown automatically inline (for at least several minutes)."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3513931)

Mohamed E.

Customer Success Specialist

> "I receive all the important emails on this software, it saves a lot of time and gets me notified of any available vacancies."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4635676)

AR

Ari R.

CEO

> "RAM memory is another con that I'd point out."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4153313)

VR

Verified Reviewer

DAM Expert

> "Of course, I like that it is open-source and free of costs. And I like Thunderbird Filelink."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5001917)

Robert M.

Freelancer

> "Maybe it is my mistake, So at least it is not user-friendly enough to learn and work with."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3763863)

JM

Juan M.

SEO supervisor

> "From the moment I started using Thunderbird, it was evident that this tool was designed with productivity in mind."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4981089)

DP

Darian P.

Team Lead of Internal Tools

> "We don't use the calendar functionality because it constantly would not work for our users."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3021391)

SS

Shashi S.

Student

> "It has fewer features than outlook but as a University student, the software works fine for me because I don't need all those..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4473755)

VR

Verified Reviewer

Senior system engineer

> "Most generic features are commercialized which will tend other users to use different mail clients"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3431281)

UA

Ubed A.

Verification expert

> "Overall, Mozilla Thunderbird is a popular email client that provides a range of features and customization options."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

SP

Santosh P.

Digital Marketer

> "Iwas needing cloud access to mails and my webmail was not cutting it."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3198853)

GS

Grant S.

Head of Sales

> "All the features but leaner, more stable & faster."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6165374)

AL

Ad L.

Director

> "It has a rather childish menu bar layout in black and white."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3024426)

JMV

Jose Miguel V.

Adjunct Professor

> "Since I have been using Thunderbird, I never regret my switch from Outlook."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

Bill B.

President

> "Another issue I have is with the built-in calendar. "

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3258266)

SP

Shane P.

Security system engineer

> "I like the fact that Thunderbird was free and worked for the most part."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6008627)

SP

Shawn P.

Owner

> "The UI is incredibly outdated."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3394046)

Petter K.

Parish Manager

> "I think the main thing I can say that I like about Thunderbird is that it is free."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6193707)

James C.

Sales and Marketing

> "I've had problems with the manager simply stopping working and having to restart."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3444626)

ML

Mark L.

Owner

> "A great way to use an email system that is very low cost and has the features and benfits you will need for many small business..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3639522)

JD

Jacob D.

Executive

> "However, this add-on comes with its own bunch of issues."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3513931)

Stanley M.

System Administrator

> "I love the new modern look that ships with Thunderbird and the support for dark theme."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4169265)

JD

Jacob D.

Executive

> "Thunderbird, from my experience, is incredibly slow and buggy."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3513931)

VR

Verified Reviewer

Senior system engineer

> "I think if you want to sync your gmail,hotmail, yahoo mail with your local client, Thunderbird is one such mail client which..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3431281)

AL

Ad L.

Director

> "The opening of tabs is something i personally do not like."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3024426)

JJ

Jeet J.

Founder & CEO

> "Moreover, it also supports adding SMTP mail which is really helpful."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4053362)

Teya B.

Teacher: Digital Illustration

> "I find the interface very, very dated."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3150330)

AR

Ari R.

CEO

> "I was delighted to start using this app when a coworker recommended it to me because I'd been trying to find something that was..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4153313)

AL

Ad L.

Director

> "Don't like the visual."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3024426)

[View Reviews](https://www.capterra.com/p/230507/Thunderbird/reviews/)

## User interface

[Mailbird](https://www.capterra.com/p/160517/Mailbird/)

4.36 (394)

[Thunderbird](https://www.capterra.com/p/230507/Thunderbird/)

4.41 (159)

### Features

Do these products fit your needs?

Prioritize real-user-identified key features according to your needs to find your best fit.

\--% Fit

vs

\--% Fit

Access Controls/Permissions

207

Important

Activity Dashboard

150

Important

AI Copilot

120

Important

Mailbird

Top features

14/47

-   Access Controls/Permissions
-   Activity Dashboard
-   AI Copilot
-   Alerts/Notifications
-   API
-   Archiving & Retention
-   Autoresponders
-   Campaign Analytics
-   Campaign Management
-   Canned Responses
-   Chat/Messaging
-   Collaboration Tools
-   Contact Management
-   Customer Segmentation
-   Customizable Fields
-   Customizable Forms
-   Customizable Templates
-   Data Recovery
-   Drag & Drop
-   Email Distribution
-   Email Marketing
-   Email Monitoring
-   Email Templates
-   Email Tracking
-   Generative AI
-   Inbox Management
-   Mobile App
-   Multiple User Accounts
-   Prioritization
-   Process/Workflow Automation
-   Queue Management
-   Real-Time Analytics
-   Real-Time Monitoring
-   Real-Time Reporting
-   Reporting/Analytics
-   Response Management
-   Routing
-   Search/Filter
-   Shared Inboxes
-   Signature Management
-   Social Media Integration
-   Spam Blocker
-   Support Ticket Management
-   Tagging
-   Third-Party Integrations
-   Whitelisting/Blacklisting
-   Workflow Management

[See all features](https://www.capterra.com/p/160517/Mailbird/#features)

Thunderbird

12/47

-   Access Controls/Permissions
-   Activity Dashboard
-   AI Copilot
-   Alerts/Notifications
-   API
-   Archiving & Retention
-   Autoresponders
-   Campaign Analytics
-   Campaign Management
-   Canned Responses
-   Chat/Messaging
-   Collaboration Tools
-   Contact Management
-   Customer Segmentation
-   Customizable Fields
-   Customizable Forms
-   Customizable Templates
-   Data Recovery
-   Drag & Drop
-   Email Distribution
-   Email Marketing
-   Email Monitoring
-   Email Templates
-   Email Tracking
-   Generative AI
-   Inbox Management
-   Mobile App
-   Multiple User Accounts
-   Prioritization
-   Process/Workflow Automation
-   Queue Management
-   Real-Time Analytics
-   Real-Time Monitoring
-   Real-Time Reporting
-   Reporting/Analytics
-   Response Management
-   Routing
-   Search/Filter
-   Shared Inboxes
-   Signature Management
-   Social Media Integration
-   Spam Blocker
-   Support Ticket Management
-   Tagging
-   Third-Party Integrations
-   Whitelisting/Blacklisting
-   Workflow Management

[See all features](https://www.capterra.com/p/230507/Thunderbird/#features)

### Recognition

Mailbird is recognized as a top-rated tool in 1 Capterra Shortlist reports

Thunderbird is recognized as a top-rated tool in 3 Capterra Shortlist reports

Best Value Email ManagementSoftware (2026) 

### Deployment & support

Mailbird

Deployment

-   Cloud, SaaS, Web-Based
-   Desktop Mac
-   Desktop Windows
-   Desktop Linux
-   On-Premise Windows
-   On-Premise Linux
-   Desktop Chromebook
-   Mobile Android
-   Mobile iPhone
-   Mobile iPad

Support

-   Email/Help Desk
-   FAQs/Forum
-   Knowledge Base
-   Phone Support
-   24/7 (Live rep)
-   Chat

Training

-   In Person
-   Live Online
-   Webinars
-   Documentation
-   Videos

Thunderbird

Deployment

-   Cloud, SaaS, Web-Based
-   Desktop Mac
-   Desktop Windows
-   Desktop Linux
-   On-Premise Windows
-   On-Premise Linux
-   Desktop Chromebook
-   Mobile Android
-   Mobile iPhone
-   Mobile iPad

Support

-   Email/Help Desk
-   FAQs/Forum
-   Knowledge Base
-   Phone Support
-   24/7 (Live rep)
-   Chat

Training

-   In Person
-   Live Online
-   Webinars
-   Documentation
-   Videos

### Company Details

Mailbird

-   By Mailbird
-   Located in United States
-   Founded in 2012

Thunderbird

-   By Mozilla
-   Located in United States
-   Founded in

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[Mailchimp](https://www.capterra.com/p/110228/MailChimp/)[4.48 (17,603)](https://www.capterra.com/p/110228/MailChimp/reviews/)

$0

Price

$13/month

4.3

Features

4.4

4.4

Ease of Use

4.4

[View full comparison](https://www.capterra.com/compare/110228-230507/MailChimp-vs-Thunderbird)