# Compare Klaviyo vs Postbox 2026 | Capterra

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

Source: https://www.capterra.com/compare/156699-195148/Klaviyo-vs-Postbox

---

# Klaviyo vs Postbox 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:

KlaviyoPostbox2/4 selected

[Klaviyo](https://www.capterra.com/p/156699/Klaviyo/)[4.6 (524)](https://www.capterra.com/p/156699/Klaviyo/reviews/)

[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.7 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

[## Klaviyo](https://www.capterra.com/p/156699/Klaviyo/)[4.6 (524)](https://www.capterra.com/p/156699/Klaviyo/reviews/)

Starting Price

$20.00/month

Value-for-Money

4.3

Functionality

4.6

Ease of Use

4.5

Customer Service

4.3

Reviews Sentiment

Based on [524 reviews](#user-reviews)

Positive

498

Neutral

20

Negative

6

[## Postbox](https://www.capterra.com/p/195148/Postbox/)[4.7 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

Starting Price

$49.00one time

Value-for-Money

4.7

Functionality

4.6

Ease of Use

4.7

Customer Service

4.4

Reviews Sentiment

GH

Based on [186 reviews](#user-reviews)

Positive

178

Neutral

5

Negative

3

## Not a match? Find software alternatives tailored to your priorities.

These software suggestions are similar to those you’re currently comparing.

### Marketing 360

4.5 (1,132)

* * *

Starting Price

Contact vendor for pricing

Free Trial

Free Version

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User rating

90%

of reviewers  
rated it above 4 stars

* * *

Highest Rated

### LiveAgent

4.7 (1,753)

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Starting Price

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Per User,Per Month

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of reviewers  
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of reviewers  
rated it above 4 stars

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### EmailOctopus

4.8 (653)

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User rating

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of reviewers  
rated it above 4 stars

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## Summary

* * *

Features in Email Management Software

Best performer

23 / 47

Only Klaviyo

-   Activity Dashboard
-   Alerts/Notifications
-   API

6 / 47

Only Postbox

-   Archiving & Retention
-   Routing
-   Signature Management

User satisfaction

User satisfaction

4.6

User reviews[524](https://www.capterra.com/p/156699/Klaviyo/reviews/)

Ease of use

4.5

Functionality

4.6

Value for money

4.3

Customer support

4.3

User satisfaction

4.7

User reviews[186](https://www.capterra.com/p/195148/Postbox/reviews/)

Ease of use

4.7

Functionality

4.6

Value for money

4.7

Customer support

4.4

Price starts from

Price starts from

$20Usage Based, Per Month

-   Free version
-   Free trial

Price starts from

$49Per User, One Time

-   Free version
-   Free trial

Best for

Best for

Klaviyo serves B2C businesses of all sizes with 400+ native integrations, including Shopify, WooCommerce, Magento, Salesforce Commerce Cloud, Square Online, Mindbody, and more.

Best for

Postbox provides a powerful email solution for independent consultants, small and medium-sized businesses, large enterprises, and educational institutions.

## User reviews

Pros & cons

LW

Lee W.

Owner

> "Easy ability to see how much money generated for each email sent, good visibility of who opened emails and who was active on the site and how long..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7077455)

Dan J.

Lead Strategist, Designer

> "They've continued to add features to try and justify the costs, but it gets harder to keep up as a small business."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7115526)

IS

Ilayda S.

Marketing Director

> "It’s improved email open rates and resulted in more sales as we can send our fashion customers targetted promotions and keep them engaged with new..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6783045)

Doga I.

Director

> "Some features are not available for every account/business."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7096566)

VR

Verified Reviewer

Digital and Marketing senior specialist

> "During my time at Playmaker and Reper International, I’ve utilized Klaviyo to bridge the gap between complex data and personalized customer..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7114621)

VR

Verified Reviewer

Marketing

> "The recent price increases have come unexpectedly where they now charge for x amount of profiles, this wasn't something we expected when we renewed..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6857226)

Elena D.

Marketing Manager

> "It provides a lot of emails templates and a lot of drag sections to quick launch a Email marketing campaign and also you could design workflows to..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6686651)

JF

Jonah F.

Manager of Product Development and Business Operations

> "We experienced issues with contacts being overwritten when multiple sign-ups/subscriptions came through the same form."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6234071)

Sam Z.

Director Of Marketing And DTC

> "Klaviyo remains the easiest way for marketers to easily segment, personalize, and create behavior based automations."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7058703)

Joseph E.

Ecommerce and IT Manager

> "I don't like the pricing structure for a lot of it."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7038090)

OC

Owen C.

MD

> "its huge amount of integrations with a range of ecommerce platforms, specifically in our case the tight integration with Shopify, helping us to..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6497002)

KC

Katie C.

Email Team LEad

> "Cost and pricing structure are not my favorite."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6813794)

Kennedy K.

freelancer

> "The thing I love is how powerful the tool is in terms of email marketing and how it can be easily integrated with big platforms such as Shopify and..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6689292)

ZP

Zenia P.

Marketing Coordinator

> "Also, it bills based on profiles, and takes ALL profiles from your Woocommerce account whether they're signed up for email or not. When I made..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4873198)

RO

Ricki O.

Owner

> "Klaviyo's best features include: 1) creating targeted campaigns and automating email workflows 2) detailed insights into email performance to be..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6551659)

GD

Grant D.

Production and Product Line Manager formerly Marketing and Web Manager

> "A bit pricy and tiers and auto upgrades take a while to get used to"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6572455)

VR

Verified Reviewer

Digital and Marketing senior specialist

> "Being Klaviyo certified, I’ve seen firsthand how their predictive analytics and behavioral "Flows" outperform basic newsletters."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7114621)

Raphael F.

Head of Ecommerce

> "It's a bit abusive even though the service is great."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6860235)

KK

Kevin K.

Marketing Manager

> "The flow builder is powerful, flexible, and ideal for organizations that rely on data-driven automation."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7045217)

VR

Verified Reviewer

Chief of Staff

> "The interface can feel dense at first."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6823065)

DANIEL V.

Consultor

> "I have several clients with whom I have implemented the tool and at least 40% of sales are thanks to the flows, registration pages and campaigns..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6483491)

AW

Adam W.

eCommerce

> "The import from mailchimp was a bit of a hassle, and the sync between Klaviyo and Shopify has some unexpected issues that crop up, but that's likely..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4821411)

SO

Sophie O.

Head of ecommerce

> "More and more start-ups are launching complementary services to Klaviyo, such as Wax (Whatsapp solution) and Loyoly (loyalty program), so we've..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6728534)

Raphael F.

Head of Ecommerce

> "We didn't appreciate the drastic price increase last year in 2024."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6860235)

RO

Ricki O.

Owner

> "Its powerful segmentation and automation tools allow me to create highly targeted and personalized email campaigns."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6551659)

MV

Mariana V.

Social media lead

> "It is a little more expensive than other similar tools."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6810154)

VR

Verified Reviewer

Marketing

> "They host weekly webinars, which are usually worthwhile and useful for the team to attend to learn about email marketing best practices."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6857226)

SK

Sabri K.

does not refund money

> "We canceled a plan by mistake, they do not take it back and do not give refunds"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6359313)

LE

Lindsey E.

Owner - Head Designer

> "I love the ease of connecting Klaviyo to my Shopify store and other apps."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7090949)

LC

Lataysha C.

Owner

> "My overall experience has been difficult to where I’ve used it and gave up on understanding it."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6768547)

BJ

Brittany J.

Operations Manager

> "I like that it has so many features that are one or two clicks to implement, like the follow up email feature."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6778473)

KM

Kortney M.

Owner

> "The cost was getting high especially for a small list. And the support was not always available straight away"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6665441)

AW

Angela W.

Graphic Designer

> "We’ve seen better engagement, stronger results, and feel much more confident in our marketing since using Klaviyo."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7075018)

IA

Isaac A.

Student

> "The only bad thing I found about this tool was that as the number of subscribers increased, the cost of Klaviyo also increased considerably, which..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4907836)

JV

Jeannie V.

Operations Manager

> "Klaviyo has got some major perks—think advanced segmentation, in-depth analytics, and automation that’s perfect for eCommerce."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6541060)

MB

Miriam B.

Administrator

> "It was pretty complicated to manage the email domain switch."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6752033)

Kennedy K.

freelancer

> "It has been the best which has helped me in my journey to e-commerce and selling online, thus bridging the gap between me and my customers."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6689292)

AS

Allison S.

Email Designer

> "It could take a while for the support team to understand what I was asking for help with."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6564905)

Samuel A.

Digital marketing manager

> "I enjoyed using Klaviyo especially for email marketing, it's easy integration with website to interact with signups makes a great option for me"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6652553)

RR

Ricardo R.

Marketing

> "Can get expensive, especially if using old email lists."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6292703)

Doga I.

Director

> "Best email marketing platform for D2C ecommerce businesses."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7096566)

GN

Gerald N.

Marketing

> "It's starting to get super expensive as our list grows."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6249682)

RG

Rob G.

CEO

> "good email campaigns with automation, easy to setup flows, integration with ecommerce stores worked well."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7006781)

Bo K.

Customer Service Ambassador

> "Has lots of reporting and analytics features but customizing them are not so practical, high management might not see them appealing."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6019114)

JN

Joshua N.

Application Specialist

> "Especially during the tough times of retail trade we have found it very successful in assisting with our conversion and driving traffic into our..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6366295)

TA

Trevor A.

Owner

> "The lack of human response when you have an issue, while paying a premium price, makes us not want to recommend Klaviyo to any of our clients."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___5062600)

VR

Verified Reviewer

CEO

> "I've used it for multiple clients and it's a very powerful and reliable app. If you've got the budget - go for it. If you're on a tight budget -..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6621821)

KN

Kyle N.

Owner

> "It is a lot of work and their support is very limited."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6296706)

MK

Madhura K.

Marketing Strategist

> "It’s a very good integration and this AI was able to capture the essence of our branding very well in a couple tryouts."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6367231)

SR

Steve R.

Digital Producer

> "Klaviyo list management is also poor, and like some other platforms (seems to be a trend), Klaviyo gears the system towards pushing you to pay for..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___3934652)

SW

Simona W.

Head of marketing

> "For the structure our emails, Klaviyo has been an effective tool."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6862781)

SL

Simon L.

Manager

> "Pricing seems a little high compared to others"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6281452)

JM

Javier M.

Project Manager

> "Flows are easy to create, user profiles are really complete with all the info on a specific contact (if you have an ecommerce integration active)"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6504218)

Mariia S.

Cosmetic Selling Manager

> "Not being able simply to transfer the email list of customers from our customer service database"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4777891)

IA

Isaac A.

Student

> "In addition, thanks to its advanced segmentation system, I was able to reach my target audience precisely, obtaining a higher opening and engagement..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4907836)

KV

Katya V.

Developer

> "We had to download a separate integration tool and were still unable to integrate the emails without the automatic double confirmation email (even..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4159014)

CL

Carissa L.

Marketing and Sales Manager

> "I really like the ease of use with Klaviyo and how they are constantly updating and releasing new features like Ai components"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6825703)

SR

Steve R.

Digital Producer

> "Basic requirements for flows are unnecessarily difficult to implement. When you contact Klaviyo support, staff gives information that contradicts..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___3934652)

Bo K.

Customer Service Ambassador

> "Klaviyo could be the best when it comes to behaviour based automations especially building customer profiles and targets the correct customers when..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6019114)

NA

Ndifon A.

Founder and CEO

> "It's a significant drawback, especially for small businesses or those with limited budgets."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6008250)

Bill L.

Vice President of Sales and Operations

> "We like how the data graphs."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___7089137)

VR

Verified Reviewer

Eigenaar

> "Klaviyo keeps deducting money from our creditcard"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6133256)

TO

Tareq O.

Sales Engineer

> "The segmentation tools enable us to create custom lists effortlessly, resulting in targeted mailings and improved results."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4737543)

John S.

Social Media Consultant

> "One potential downside of this platform is its pricing structure. While there is a free version of Klaviyo available, the more advanced features and..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4607346)

MS

Megha S.

marketing automation specialist

> "Klaviyo is appreciated by users for its user-friendly interface, advanced segmentation capabilities, integrations with other tools, analytics, and..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4788112)

MC

Maria C.

Sales Executive

> "It's frustrating when Klaviyo slows down and we have to start over from scratch after making edits, especially if the Email we're creating has a lot..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4679341)

SL

Suzanne L.

Head of CRM

> "Great functionality for building automations"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6839745)

Md R.

Graphics Designe

> "I don't like Klaviyo campaign system it's take some times"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4821612)

SB

Sam B.

E-Commerce Manager

> "It integrates with Shopify remarkably well, and creating workflows via Shopify is very easy."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6746071)

JP

Juliette P.

CEO

> "Klaviyo is a little expensive compared to sendinblue that we used before."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6007467)

IL

Isaac L.

Director of Sales and Business Development

> "Their company continually develops new products that help merchants achieve greater success."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6859213)

MO

Maria O.

Growth Hacking Analyst

> "It has some essential features in a small letter size which is complicated and complex to read; sometimes it isn't as intuitive as you would like it..."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___3685319)

MK

Madhura K.

Marketing Strategist

> "I love how Klaviyo not only focuses on triggered flows and campaigns but sms too."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6367231)

TB

Tanya B.

CRM Manager

> "You cannot add users to a list based on their engagement actions in a workflow."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___3547680)

SL

Suzanne L.

Head of CRM

> "Frequent platform updates bringing new and improved capabilities"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6839745)

VR

Verified Reviewer

Owner

> "I didn't know anything about email marketing before using Klaviyo."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6043278)

NM

Natasha M.

Controller

> "Syncs to Shopify and has good reporting."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6824030)

Ben U.

CTO

> "a bit expensive if you dont know what your doing."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6060970)

VR

Verified Reviewer

Marketing

> "It's easy to use, and the ability to build lists and segments is useful and also user friendly."

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___6857226)

MH

Mia H.

Associate Manager Marketing

> "Sometimes it is hard to monitor campaigns when there are multiple going on at once"

[See full review](https://www.capterra.com/p/156699/Klaviyo/#Capterra___4462927)

[View Reviews](https://www.capterra.com/p/156699/Klaviyo/reviews/)

GH

Guy H.

None

> "The customizable tagging and labeling options allow for seamless email management, making it easy to prioritize and..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6361389)

JM

Jaromir M.

owner

> "main issue: not checking reliably new IMAP messages in other than Inbox compared to e.g. eM client.other: settings..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___5086184)

GH

Guy H.

None

> "Postbox's advanced search functionality ensures that finding specific emails or attachments is quick and effortless."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6361389)

NVI

Natesh Venkataraman I.

Partner

> "Calendar is not available- When an email is marked as spam it does not go to the junk folder"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4432978)

LC

Lynn C.

Retired Homeopath

> "I can create as many folders as I want and create filters for ease of filing"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6417493)

BK

Beta K.

founder

> "Unfortunately, there are no mobile apps, I wish someday they create it, oh and add google drive integration."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4338004)

BM

Bridget M.

Producer

> "The support is good, and there are videos if you get stuck. But for me, it is the simplicity of it all, that it..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4994109)

DH

Dag H.

BDM

> "If not logged on the machine for a while, it is unresponsive while synchronizing"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4597965)

DH

Dag H.

BDM

> "I really enjoy the software and with including a synchronization of categories in Outlook 365 and iff possible..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4597965)

AP

Antony P.

Software Manager

> "I find the name difficult to remember!"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6147724)

Burak O.

Ph.D. Student

> "The most important aspect of an e-mail app for me is the ability to create filters and Postbox does a really good..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___3753706)

LF

Laura F.

Distinguished Service Professor

> "Often I want to tag different emails in the conversation with a different topic tag but this isn't possible. "

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___3338548)

AP

Antony P.

Software Manager

> "Loads of features for the more advanced user."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6147724)

BM

Bob M.

owner

> "Second, once I do apply Windows' new way of unblocking installation files, I get the message that the file is..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2513791)

HK

Heinrich K.

Localization Professional

> "I like the clean and crisp layout, ease of use."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4963678)

MS

Martin S.

Motion Designer

> "The feature I miss the most is the missing taskbar badge for unread mails under Windows"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2672051)

TM

Tiago M.

Nothing

> "I didn't encounter any difficulties, so I gladly paid for it and supported the developers."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6102191)

JP

JEFFREY P.

GURU

> "SOMETIMES I FORGET WHERE I GET MY LICENSE WHEN I INSTALL ON NEW COMPUTER, I THINK THAT'S GOTTEN BETTER NOW"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2208916)

JM

Jaromir M.

owner

> "nice interface, ease of use, reliability (never lost any mail in 10 years)"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___5086184)

PD

Per D.

Designer

> "I spent years trying to find an email app that didn't suck, I even tried out an earlier version of Postbox and was..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2650367)

PT

Philipp T.

Product Designer

> "Postbox features a beautiful, clear, lucid, and modern interface."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___3464606)

CR

Chris R.

Owner

> "The message filtering does not work."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2133916)

CH

Christian H.

Engineering Consultant

> "The wonderful filter by contacts is one of those great features of Postbox... if not the best!"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4479339)

JL

JASON L.

Partner/EiC

> "For some reason, Postbox fails to see it."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2559567)

CM

Charles M.

Retired

> "Postbox was very easy to setup and use, and I like the personalization options and the many themes available."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4553380)

JL

JASON L.

Partner/EiC

> "Weird behaviors."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2559567)

[View Reviews](https://www.capterra.com/p/195148/Postbox/reviews/)

## User interface

[Klaviyo](https://www.capterra.com/p/156699/Klaviyo/)

4.64 (524)

[Postbox](https://www.capterra.com/p/195148/Postbox/)

4.74 (186)

### 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

Klaviyo

Top features

23/47

-   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/156699/Klaviyo/#features)

Postbox

6/47

-   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/195148/Postbox/#features)

### Recognition

No recognitions have been awarded to Klaviyo

No recognitions have been awarded to Postbox

### Deployment & support

Klaviyo

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

Postbox

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

Klaviyo

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

Postbox

-   By Postbox
-   Located in United States
-   Founded in 2008

## Popular Comparisons

[Klaviyo](https://www.capterra.com/p/156699/Klaviyo/)[4.64 (524)](https://www.capterra.com/p/156699/Klaviyo/reviews/)

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[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.74 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

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4.7

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4.5

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[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.74 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

vs

[Google Workspace](https://www.capterra.com/p/247901/Google-Workspace/)[4.70 (17,470)](https://www.capterra.com/p/247901/Google-Workspace/reviews/)

$49one time

Price

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4.6

Features

4.6

4.7

Ease of Use

4.6

[View full comparison](https://www.capterra.com/compare/195148-247901/Postbox-vs-Google-Workspace)

[Klaviyo](https://www.capterra.com/p/156699/Klaviyo/)[4.64 (524)](https://www.capterra.com/p/156699/Klaviyo/reviews/)

vs

[Gmail](https://www.capterra.com/p/202338/Gmail/)[4.81 (13,316)](https://www.capterra.com/p/202338/Gmail/reviews/)

$20/month

Price

$0

4.6

Features

4.7

4.5

Ease of Use

4.8

[View full comparison](https://www.capterra.com/compare/156699-202338/Klaviyo-vs-Gmail)

[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.74 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

vs

[Microsoft Outlook](https://www.capterra.com/p/227138/Microsoft-Outlook/)[4.54 (2,421)](https://www.capterra.com/p/227138/Microsoft-Outlook/reviews/)

$49one time

Price

Contact vendor for pricing

4.6

Features

4.5

4.7

Ease of Use

4.5

[View full comparison](https://www.capterra.com/compare/195148-227138/Postbox-vs-Microsoft-Outlook)

[Klaviyo](https://www.capterra.com/p/156699/Klaviyo/)[4.64 (524)](https://www.capterra.com/p/156699/Klaviyo/reviews/)

vs

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$20/month

Price

$10/month

4.6

Features

4.5

4.5

Ease of Use

4.6

[View full comparison](https://www.capterra.com/compare/136603-156699/MailerLite-vs-Klaviyo)

[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.74 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

vs

[Microsoft 365](https://www.capterra.com/p/227157/Microsoft-365/)[4.65 (14,028)](https://www.capterra.com/p/227157/Microsoft-365/reviews/)

$49one time

Price

$6/month

4.6

Features

4.6

4.7

Ease of Use

4.5

[View full comparison](https://www.capterra.com/compare/195148-227157/Postbox-vs-Microsoft-365)

[Klaviyo](https://www.capterra.com/p/156699/Klaviyo/)[4.64 (524)](https://www.capterra.com/p/156699/Klaviyo/reviews/)

vs

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$20/month

Price

$15/month

4.6

Features

4.5

4.5

Ease of Use

4.2

[View full comparison](https://www.capterra.com/compare/79367-156699/ActiveCampaign-vs-Klaviyo)

[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.74 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

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$49one time

Price

Contact vendor for pricing

4.6

Features

4.1

4.7

Ease of Use

4.4

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$20/month

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4.6

Features

4.2

4.5

Ease of Use

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[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.74 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

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[Brevo](https://www.capterra.com/p/132996/brevo/)[4.62 (3,406)](https://www.capterra.com/p/132996/brevo/reviews/)

$49one time

Price

$9/month

4.6

Features

4.5

4.7

Ease of Use

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