# Page 2 | Thunderbird Reviews 2026. Verified Reviews, Pros & Cons | Capterra

> Page 2 - Is Thunderbird the right Email Management solution for you? Explore 156 verified user reviews from people in industries like yours to make a confident choice.

Source: https://www.capterra.com/p/230507/Thunderbird/reviews

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Thunderbird

4.4 (156)

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

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

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Last updated March 13th, 2026

# Page 2 - Reviews of Thunderbird

## Showing most helpful reviews

Showing 26-50 of 156 Reviews

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Rating

Company Size

Reviewer's Role

Length of Use

Frequency of Use

AF

Alvaro F.  
encargado carroceria  
Automotive  
Used the software for: 2+ years

### "Practico y eficaz"

August 27, 2025

4.0

en general Es un software bastante agradable de usar, bastante intuitivo y que no requiere de saber manejar buzones de correo para empezar con el

Pros

Lo que mas me ha gustado de Thunderbird es la facilidad a la hora de añadir direcciones de correo, bastante rápido y eficaz. la facilidad q te da trabajar con diferentes cuentas en solo un clic y la gestión de los emails

Cons

el diseño en si se queda un poco anticuado en comparación con otros software y a la hora de leer los emails recibidos creo que se podría diseñar de otra formas mas eficiente

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Outlook me pedía diferentes actualizaciones y no era tan intuitivo a al ahora de volver a meter las direcciones de correo

Review Source

GB

Guy B.  
président  
Sports  
Used the software for: 2+ years

### "comment joindre Thunderbird pour expliquer son problème"

September 25, 2025

2.0

Pros

Ca fait des années que je suis sur thunderbird il arrive qu'il y ait des bug mais toujours réglés rapidement sans avoir besoin de faire de recherche

Cons

Je rencontre un problème avec ma messagerie et pas moyen de joindre Thunderbird pour résoudre le problème impossible d'envoyer des message depuis plus d'une semaine et impossible de les joindre.

Review Source

DT

Dominique T.  
chercheur essayiste  
Mechanical or Industrial Engineering  
Used the software for: 1-2 years

### "Enfin, un oiseau qui tient la route..."

December 12, 2024

5.0

facile et convivial a utiliser tous les jours et même en réseau

Pros

Bonjour, Facile d'utilisation sur mails, agendas, contacts, ciblage en entrée archives encore mieux et moins compliquer que d'autres

Cons

je n'en ai pas encore trouvé sur le fonctionnement de ce logiciel

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Essai et adopté sur l'ensemble du fonctionnement

Review Source

MK

Matt K.  
Consultant  
Management Consulting  
Used the software for: 2+ years

### "So much nicer to use than Outlook!"

August 28, 2024

5.0

I probably use less than 20% of what it can do, but that's all I need. Multiple email accounts, smart message handling, a decent filter system, easy spam controls, it all just works. 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.

Pros

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

Cons

Adding in calendar and task list to compete with Outlook was unnecessary.

Review Source

MV

Michel V.  
autre  
Leisure, Travel & Tourism  
Used the software for: Less than 6 months

### "Avis sur Thunderbird"

January 12, 2025

3.0

Utilise par nécessité mais préférait Outlook

Pros

Pas d'avantages comparé à Outlook Déçu par ce produit

Cons

Présentation fouillis Pas convivial et peu attrayant Pas très intuitif à l'utilisation

Review Source

VR

Verified Reviewer  
Content Editor  
Online Media  
Used the software for: Less than 6 months

### "Straightforward to set up and use"

December 8, 2024

4.0

I'm generally very satisfied with Thunderbird.

Pros

It's super easy to set up and use. The UI is user-friendly and the app allows for multi-account setup.

Cons

There is no email or live-chat support available.

Review Source

SA

Sara A.  
Engineer  
Information Technology and Services  
Used the software for: 1-2 years

### "The free email client"

June 25, 2024

3.0

I use Thunderbird on PCs that have not Office installed and I need an email client instead of the web one. I don't like very much the menu, especially the settings section. The interface looks a bit older, compared to other email clients. Anyway Thunderbird is a good program, but if you use a 365 email account I recommend Outlook instead.

Pros

Thunderbird is free and allows to manage multiple accounts email, so if you want to save money and use a regularly updated program without problems about licenses/demo/trial etc., you are doing the right choice. There is a lot of documentation on internet, so in case of troubles (or simply if you need to do further settings) you will easily find your answer. After you have configured at least one email account, you will see your email folders on the left and all your emails on the right. Creating and organizing your emails and folders is easy and intuitive.

Cons

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

Review Source

KH

Kasi H.  
Front Desk Manager  
Hospitality  
Used the software for: Less than 6 months

### "Not worth the time"

August 4, 2024

3.0

It was pretty much a complete disappointment. With the calendar and the mail and then it using 50% CPU.

Pros

We didn't not like it. We started looking for alternatives within a few weeks

Cons

It kept deleting our calendar. And since we are a hotel our calendar is very important. It also just stopped fetching mail.

Alternatives considered

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Reason for choosing Thunderbird

We thought it was a better deal. We were very wrong

Review Source

Matheus B.  
Adm. de Vendas  
Automotive  
Used the software for: 2+ years

### "Excelente ferramenta, Thunderbird o melhor provedor de email que já usei."

July 28, 2023

5.0

Excelente experiência com a ferramenta, o melhor que já usei.

Pros

O que mais gosto do Thunderbir é o layout e as ferramentas de organização do email.

Cons

Apenas a capacidade de memória poderia ser um pouco maior.

Review Source

Sunny K.  
Marketing Manager  
Information Technology and Services  
Used the software for: 1-2 years

### "Awesome and Free Email App"

November 28, 2023

5.0

I have set up multiple accounts in Thunderbird, making it convenient for me to receive emails in one place. This setup saves me a significant amount of time.

Pros

Thunderbird is incredibly user-friendly and simple to install. It accommodates various mail types and allows for easy configuration. Additionally, it facilitates the management of multiple email inboxes in a single, convenient location, which can be quite intriguing.

Cons

I'm happy with Thunderbird, but It takes a little longer to send an email.

Review Source

JMV

Jose Miguel V.  
Adjunct Professor  
Education Management  
Used the software for: 1-2 years

### "A proof that free can be good"

June 9, 2023

4.0

Since I have been using Thunderbird, I never regret my switch from Outlook. Over the years, although the development has not been fast, it has been fast enough for the product to adapt, at least in functionality, to what every mail client must deliver to its user.If you are looking for a robust free email client, Thunderbird is the best option.

Pros

I am sure that many people like me came to this product because it is the Mozilla Foundation behind it. We all know how they think about their product, making privacy their flagship. In the case of Thunderbird, you can find a robust email client with functionalities at the level of many other paid clients. If I need to list Thunderbird's advantages, I will start by talking about its extensibility, making it one of the first email clients you can improve and customize with free third-party add-ons. Another great addition of the last years was the "Smart folders," making your multiple account inbox easier to visit and search.Right now I am using Thunderbird for all my personal emails, and the client has all you need to manage successfully all your personal data flow.Thunderbird is free, and for sure is the best option for email clients at this tier.

Cons

I will list the things I think can be improved in Thunderbird, but I repeat, we are in front of a robust FREE client, so please consider this when you read about the following points.Complexity: While Thunderbird's extensibility is a strength, it can also be a weakness. The sheer number of options and settings can be overwhelming for less tech-savvy users, and it may take some time to configure it to your liking. This one was my first problem after I switch from Microsoft Outlook.Aesthetics and UI: For me, this is a big problem. While this is subjective, and the interface can be customized, when you open Thunderbird you are looking at a user interface that has not been modernized according to the times.No Native Mobile Application: On June 22, Thunderbird announce the partnership with K-9 email to make real the Android native mobile application, until now, this not happens. Almost all people manage their emails on the go from their smartphones, so again, this is a must for a modern email client.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

I tried their email solution because I love what Mozilla Foundation makes with Firefox.

Review Source

FM

Francesca M.  
IT Technician  
Computer & Network Security  
Used the software for: 2+ years

### "Ottimo client di posta elettronica. Consigliato!"

August 28, 2023

5.0

Esperienza super positiva. Consiglio vivamente questo software.

Pros

Il software è di facile utilizzo per l'utente finale ed è completo di tutte le funzionalità dei suoi competitor. La cose più bella per l'amministratore IT è la reinstallazione di tutti gli account mail/archivi su nuovi dispositici o su pc formattati. Basta copiare la directory nativa e in un attimo la reimportazione è completa.TOP!

Cons

la gestione delle firme. Un po' ostica come cosa.

Review Source

LF

Luca F.  
web developer  
Internet  
Used the software for: 2+ years

### "Applicazione gratuita per la gestione della posta elettronica"

February 10, 2023

5.0

Pros

Thunderbird appartiene alla grande famiglia Mozilla Foundation, viene sviluppato da un team consolidato in applicazioni all'avanguardia per il web, gode del contributo di milioni di utenti e non è legato ad interessi specifici di sistemi operativi o altri software proprietari. Ha tante e facili opzioni di configurazione e personalizzazione, integra funzioni quali rubrica e calendario, fruisce di continui aggiornamenti in termini di sicurezza e performance.

Cons

In tantissimi anni di utilizzo non ho mai 'perso' una mail o un archivio, sinceramente, e senza interessi personali, ad oggi non posso addebitare a questo software alcun inconveniente.

Reason for choosing Thunderbird

Ho scelto Thunderbird sulla base della positivissima esperienza dei prodotti Mozilla, Firefox nelle diverse versioni in particolare

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Perché il precedente software gestiva tutte le email in unico file, il che produceva in pochi mesi archivi di dimensioni sempre meno gestibili oltre a esporre al rischio di perdita completa di tutti i dati.

Review Source

WP

Wiktor P.  
Educator  
Education Management  
Used the software for: 1-2 years

### "Thunderbird needs more integration with other software"

June 16, 2023

4.0

It is good inbox managment software for the smaller companies or solo enterprenuers, but when you need to optimize some processess in your organization, it may lack integration abilities.

Pros

It is fast, easy to use and the search function is excellent. You can easily find conversation without knowing its exact topic, content or receiver, thunderbird can find it even wtih some general keywords.

Cons

Lack of integration with another softwares that controls workflow. It is just separate software without connection to other processess in my organization. I would like to see it integrated with some note taking apps, communictaion softwares like Slack, Calendars, projects managment software etc.

Alternatives considered

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)[Yahoo Mail](https://www.capterra.com/p/266980/Yahoo-Mail/)

Reason for choosing Thunderbird

faster, better design, better search option and inbox managment, better price (free)

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

faster, better design, better search option and inbox managment.

Review Source

VR

Verified Reviewer  
Operations Analyst  
Marketing and Advertising  
Used the software for: 6-12 months

### "Comprehensive Review: Thunderbird - A Feature-Packed Email Management Solution"

February 7, 2023

3.0

Overall, Thunderbird is a feature-packed email management solution that provides advanced email features and customization options for individuals and small businesses. It is a free and open-source application that supports multiple email accounts, integrates well with other applications, and provides robust security features. However, some users may find the user interface to be complex and the performance to be slow on older computers.

Pros

Customizable: Thunderbird Mail is highly customizable, allowing users to personalize their email experience by choosing from a wide range of themes, plugins, and extensions.Advanced Features: Thunderbird Mail offers advanced features, such as message categorization, quick search, and email filtering, which make it easier for users to manage their email and prioritize important messages.Support for Multiple Accounts: Thunderbird Mail supports multiple email accounts, allowing users to manage all their email in one place, reducing the need to switch between multiple email services.Integration with Other Applications: Thunderbird Mail integrates well with other applications, such as calendars, to-do lists, and news readers, allowing users to streamline their workflow and manage their tasks more efficiently.Free and Open Source: Thunderbird Mail is a free and open-source application, which makes it a cost-effective solution for individuals and small businesses.Cross-Platform Support: Thunderbird Mail is available for Windows, Mac, and Linux, so users can choose the platform that best suits their needs.

Cons

Complex User Interface: Some users may find Thunderbird's user interface to be complex and difficult to navigate, especially if they are not familiar with advanced email features.Slow Performance: Thunderbird may run slow on older computers, especially when managing a large number of emails and attachments.Limited Mobile Support: Thunderbird does not have a dedicated mobile app, which may make it difficult for users to access their email from their mobile devices.Lack of Cloud Integration: Thunderbird does not offer cloud integration, which may limit its usefulness for users who need to access their email from multiple devices.Limited Customer Support: Thunderbird is an open-source project, which means that customer support is limited and users may have to rely on online forums and community resources to get help.Compatibility Issues: Thunderbird may not be compatible with all email providers, which could limit its usefulness for some users.

Switched from

[Gmail](https://www.capterra.com/p/202338/Gmail/)

For more features and customization

Review Source

AR

Adam R.  
Owner  
Entertainment  
Used the software for: 2+ years

### "Thunderbird is the ONLY email software you need."

October 5, 2022

5.0

Thunderbird handles multiple email accounts. There is even a chat feature. It sorts my email. It removes the Spam and Junk correctly. It archives and stores my past emails and keeps them where they can be searched and accessed at any time. A life saver finding old emails once again!

Pros

Thunderbird is so easy to setup. Also if there is an option you want included such as a calendar or todo list or whatever, it integrates easily with add-ons and tools. There is nothing missing when it comes to this power tool!

Cons

The software has never let me down. There is nothing to say about "like least". It works. It is easy to learn. And use it every day. And have for YEARS.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)[Gmail](https://www.capterra.com/p/202338/Gmail/)

The programs I was using before, would not load on some days. They didn't have all the features that I could setup and wanted. Thunderbird has it all. Loved it from the first day I set it up.

Review Source

Cristian Z.  
Técnico  
Consumer Electronics  
Used the software for: 2+ years

### "Thunderbird el gestor de correo más completo"

January 20, 2023

5.0

Muy contentos en la empresa con este gestor de correo, ya que se administran varias cuentas en cada gestor y nunca ha dado errores ni de quedarse colgado, ni de perdida de correos

Pros

La facilidad de uso, la rapidez de ejecución, sin cuelgues y sin archivos pst que pueden corromperse al llegar a ciertos gigas de tamaño, un software sin errores que llevo usando más de 4 años sin ningún fallo

Cons

No se ha encontrado fallo alguno en el gestor de correo thunderbird, ningún contra que añadir

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Rapidez y estabilidad

Review Source

VR

Verified Reviewer  
Senior lecturer  
Higher Education  
Used the software for: 2+ years

### "Complete control over your mails"

August 5, 2021

5.0

Pros

It is completely configurable through add-ons. If you use Firefox, you will find the same environmemt and interface. I have several language thesaurus add-ons, so not to make any typo whatever the language I'm using. It is free!! Also if many mail software are free, having Mozilla foundation behind gives you the security of future developments, and that it will never change to paid mode... It is so easy to move your mails and whatever linked to it, from one workstation to another (i.e. when you change your laptop..)... So to replicate your environment and have consistency of your mails (you need to se up IMAP accounts). It is hence also very easy to have backups of your mails, just in case.

Cons

Nothing really, I'm happy with Thunderbird and don't consider to change it in the future... What I would say, is that maybe I don't use it at its best, for the extensive number of add-ons existing, as I look at them only when I need a certain function.

Review Source

gT

giovanni T.  
Libero professionista  
Financial Services  
Used the software for: 2+ years

### "Thunderbird da oltre un decennio"

February 2, 2023

5.0

Non ricordo da quanti anni lo utilizzo ma ormai saranno almeno 14 o 15 anni, ha sostituito outlook che creavi molti problemi, nella mia azienda ogni pc ne è dotato e curo personalmente le configurazioni.

Pros

A mio parere non ha rivali, prima di tutto è gratis, è super affidabile a livello di database, non mi si sono mai corrotti in tanti anni di utilizzo, il livello di personalizzazione è profondissimo ed esistono un numero enorme di addons che si possono installare. E' un fedele compagno di lavoro di cui non potrei mai farne a meno.

Cons

L'unica consa che non mi piace di thunderbird è che non abbiano creato la versione cloud e non ne ho mai capito il perchè, tutto sommato non sarebbe difficile crearla facendo il backup dei db nel cloud.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Troppi problemi con database corrotti ed il prezzo.

Review Source

Bill B.  
President  
Computer Software  
Used the software for: 2+ years

### "With free software, you often get MUCH MORE than what you pay for!"

December 17, 2021

5.0

Email lies at the heart of our business -- customer support and customer contact is critical to our survival. This is not something that can be relegated to a Web UI or just any old client interface. Thunderbird provides small organizations (like ours) a free Email client that is full-featured, fast, and efficient. I can't imagine trying to use anything else!

Pros

The Thunderbird Email client provides a fast and easy way to corral multiple Email addresses. With support for POP3 mailboxes, you can pull your data off the Email server and retain/manage it all locally, which is great when you have to travel and may not always have access to the Email server, or for when you want the extra security of getting the data off of the Internet quickly. With IMAP support, you can enable access to a shared Email queue, allowing multiple employees to see and respond to the inbound messages -- ideal for a customer-facing "Sales" or "Support" queue -- and every user can see and search on every reply. All local messages and attachments are stored in a local profile folder, which can be easily moved to a NAS, allowing you to access the Email profile from any machine on the network. You can also synchronize your profile to your laptop so that all of your Email can travel with you into the field, even while disconnected. Add in the intuitive user interface, multiple-calendar features, a solid address book function, and you have an Email client that is hard to beat. Since it's free to use, this makes it even better!

Cons

Like with any software solution that you've used for 10+ years, the product does evolve, and they change the UI from time to time. These "improvements" may be beneficial to most users, but moving things around in the UI can slow you down, and the changes can sometimes break automation scripts that rely on specific sequences of keystrokes. Luckily, these occur only about every 2 years or so. Another issue I have is with the built-in calendar. Sometimes it captures an Event from an EMail with an ICS attachment -- and sometimes it doesn't. Apparently, Microsoft Teams doesn't send properly-formatted messages, so this is most often broken, but you can always work around it through manual data entry.

Reason for choosing Thunderbird

I didn't want to be tied to another Microsoft solution, with a back-end Exchange Server needing to be configured in my office. (Yes, this was back in the CompuServe days, so running Exchange in the cloud wasn't an option back then, and it required a Windows Server.)

Review Source

AS

Amy S.  
Stage Manager  
Entertainment  
Used the software for: 2+ years

### "Managing Nonprofit Theatre Communications for Cast and Crew"

August 14, 2021

5.0

As stage manager for a small, non-profit theatre troupe, I used Thunderbird to create and manage an email group for every production. I can easily copy and rename my list for a new production, edit out non-participants, and add new ones. Contact suggestion cuts my work in half, and assists me in recalling numerous names. When I need to quickly communicate a schedule change, script addition, or weather cancellation, a few letters in the address box bring up my email group list immediately. File folder organization is simple and practical, and allows me to manage productions past and present in detail.

Pros

Thunderbird simplifies our communication with director, cast and crew of every production. Group email lists are manageable and user-friendly.

Cons

I would appreciate the ability to easily export my group lists so that our director could personally address the group.

Reason for choosing Thunderbird

Thunderbird allows me to monitor multiple email accounts on one screen. Setup is a breeze. Adding accounts requires only an email and password; Thunderbird figures out the details I don't know.

Review Source

Stanley M.  
System Administrator  
Information Technology and Services  
Used the software for: 2+ years

### "The Best Opensource Mail Client."

November 7, 2022

5.0

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

Pros

Am an opensource lover and the fact that thunderbird has been my mail client for years.

Cons

The email configuration can be made simple that what is being currently offered for custom domains.

Alternatives considered

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

Reason for choosing Thunderbird

Open License and free to install and use meaning if you try it and it doesn't work for you you can always opt to change without any incurred cost.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Cost of License.

Review Source

VR

Verified Reviewer  
Consultant / developer  
Information Technology and Services  
Used the software for: 2+ years

### "An open source great email client"

June 9, 2023

5.0

I've been a Thunderbird user from so many years, I trid some other software for the purpose of experiment and comparison, but I've always switched back to it.

Pros

Thunderbird is full of features, customizable with addons and themeable. It has all the features you'd expect from a mail client, much better than some other commercial softwares: advanced search and filters, archiving, automatic message filtering, OpenPGP keys management, grouping by conversation, calendar with alerts, and many others.

Cons

At the moment of writing, you can not order your accounts in the sidebar unless you install one of the dedicated addons.

Review Source

JR

Julien R.  
Enseignant à domicile  
Higher Education  
Used the software for: 2+ years

### "Selon moi, un des meilleurs gestionnaires de messagerie gratuit (qui a besoin néanmoins de dons...)"

December 13, 2022

5.0

Gestion efficace et rapide des différentes boîtes de messagerie

Pros

La prise en compte d'un grand nombre de boîtes de messagerie différentes.Une utilisation assez simple ouvrant à une multitude d'options de paramétrage.Les notifications sonores et visuelles sont primordiales lorsqu'on travaille en même temps avec d'autres logiciels et Thunderbird.La recherche et le filtre rapide sont des fonctions importantes qui permettent de gagner du temps lorsqu'on a un volume conséquent de données.

Cons

Un utilisateur novice pourrait peut-être trouver en un seul coup d'œil ce logiciel assez compliqué d'utilisation, sans doute par le grand nombre de paramétrage qu'offre ce logiciel.

Reason for choosing Thunderbird

Pour la simplicité et l'efficacité de Thunderbird qui est un logiciel incomparable face à d'autres gestionnaires de boîtes de messagerie utilisant par exemple trop peu de paramétrages.

Review Source

GS

Grant S.  
Head of Sales  
Information Technology and Services  
Used the software for: 2+ years

### "Best free email client like Outlook "

February 12, 2024

5.0

Been using as a replacement to the Outlook for over a decade now since I moved to Mozilla and never looked back. All the features but leaner, more stable & faster.

Pros

Familiar UI to Outlook after using for so many years. It's also fast and stable.

Cons

The toolbar buttons could be lower to the actual inbox for less scrolling to action.

Switched from

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)

Outlook is to feature busy, unstable and slow.

Review Source

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