--- title: Thunderbird Reviews meta\_title: 'Thunderbird Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter 340 reviews by the users' company size, role or industry to find out how Thunderbird works for a business like yours. aggregate\_rating: rating\_value: 4.3 review\_count: 340 scale: '5' date\_modified: '2026-08-09' parent\_category: name: Collaboration & Productivity url: https://www.g2.com/categories/collaboration-productivity --- ### Thunderbird Pros and Cons: Top 5 Advantages and Disadvantages #### Quick AI Summary Based on G2 Reviews Generated from real user reviews Users find Thunderbird to be **very easy to use** , streamlining email management and task coordination seamlessly. [(4 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1225855&qs=pros-and-cons#reviews) Users value Thunderbird for its **reliable functionality and customization** , enhancing their email management experience significantly. [(4 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1225521&qs=pros-and-cons#reviews) Users appreciate the **convenient email management** in Thunderbird, streamlining access to multiple accounts in one inbox. [(2 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2230683&qs=pros-and-cons#reviews) Users benefit from Thunderbird's **stability and organization features** , making daily email management efficient and reliable. [(2 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1226494&qs=pros-and-cons#reviews) Users value the **efficiency** of Thunderbird, noting its lightweight design and quick email synchronization across platforms. [(2 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1225867&qs=pros-and-cons#reviews) Users find the **difficult setup** of Thunderbird frustrating, especially when managing multiple email accounts and settings. [(2 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2064059&qs=pros-and-cons#reviews) Users find it challenging to navigate **missing features** like server-side rules and advanced account setups in Thunderbird. [(2 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2230822&qs=pros-and-cons#reviews) Users experience **sync issues** that hinder performance, especially with large mailboxes and across multiple devices. [(2 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1226072&qs=pros-and-cons#reviews) Users experience **bug issues** with Thunderbird, as large mailboxes lead to slow startup and resource-heavy tasks. [(1 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2498713&qs=pros-and-cons#reviews) Users report a **confusing interface** in Thunderbird, particularly with differing modes and inconsistent features across versions. [(1 mentions)](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2230709&qs=pros-and-cons#reviews) ### 5 Pros or Advantages of Thunderbird ##### 1. Ease of Use Users find Thunderbird to be **very easy to use** , streamlining email management and task coordination seamlessly. [ See 4 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1225855&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 4.5/5 "A more peaceful and secure work experience." What do you like about Thunderbird? Thunderbird lets us bring all our email accounts into one shared inbox—no more juggling profiles or platforms. With built-in OpenPGP encryption and an ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "An email client simple and efficient" What do you like about Thunderbird? My use of Thunderbird is pretty much simple: email reception and sending, filter to find an email per date or sender, automatic filters to get emails ##### 2. Functionality Features Users value Thunderbird for its **reliable functionality and customization** , enhancing their email management experience significantly. [ See 4 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1225521&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "An email client simple and efficient" What do you like about Thunderbird? My use of Thunderbird is pretty much simple: email reception and sending, filter to find an email per date or sender, automatic filters to get emails ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "Super satisfied with Thunderbird" What do you like about Thunderbird? I like the ease of use but also the number of features and plugins available to adapt it to your specific needs. ##### 3. Customer Support Users appreciate the **convenient email management** in Thunderbird, streamlining access to multiple accounts in one inbox. [ See 2 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2230683&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 4.5/5 "A more peaceful and secure work experience." What do you like about Thunderbird? Thunderbird lets us bring all our email accounts into one shared inbox—no more juggling profiles or platforms. With built-in OpenPGP encryption and an ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "An email client simple and efficient" What do you like about Thunderbird? My use of Thunderbird is pretty much simple: email reception and sending, filter to find an email per date or sender, automatic filters to get emails ##### 4. Daily Use Users benefit from Thunderbird's **stability and organization features** , making daily email management efficient and reliable. [ See 2 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1226494&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "An email client simple and efficient" What do you like about Thunderbird? My use of Thunderbird is pretty much simple: email reception and sending, filter to find an email per date or sender, automatic filters to get emails PS PollyAnna S. Small-Business (50 or fewer emp.) 5.0/5 "Free and Easy to Use" What do you like about Thunderbird? Thunderbird is free to its users. They appreciate donations. It's simple to use. Easy to put on your computer. I use it every day. ##### 5. Efficiency Users value the **efficiency** of Thunderbird, noting its lightweight design and quick email synchronization across platforms. [ See 2 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1225867&qs=pros-and-cons#reviews) See Related User Reviews ![Ryadh S.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Ryadh S.") RS Ryadh S. Small-Business (50 or fewer emp.) 5.0/5 "An excellent mail app, up to par with the very best in the field" What do you like about Thunderbird? Lightweight and reactive, can also be modified with plugins and add-ons for improved functionalities and customisation. EE Elizabeth E. Small-Business (50 or fewer emp.) 5.0/5 "Synchronize personal and corporate email" What do you like about Thunderbird? Synchronize different corporate and educational domain emails, relationship and consultation with shared server and calendar for tasks to do. New ver ### 5 Cons or Disadvantages of Thunderbird ##### 1. Difficult Setup Users find the **difficult setup** of Thunderbird frustrating, especially when managing multiple email accounts and settings. [ See 2 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2064059&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "An email client simple and efficient" What do you dislike about Thunderbird? When it comes to re-set up an email account it can become a bit complicated, Thunderbird tends to use automatic processes that can be a pain to stop. ![Ryadh S.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Ryadh S.") RS Ryadh S. Small-Business (50 or fewer emp.) 5.0/5 "An excellent mail app, up to par with the very best in the field" What do you dislike about Thunderbird? Attaching email addresses from other servers can be complicated (when setting up pop3/smtp addresses and security functionalities). ##### 2. Missing Features Users find it challenging to navigate **missing features** like server-side rules and advanced account setups in Thunderbird. [ See 2 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2230822&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "An email client simple and efficient" What do you dislike about Thunderbird? When it comes to re-set up an email account it can become a bit complicated, Thunderbird tends to use automatic processes that can be a pain to stop. ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Small-Business (50 or fewer emp.) 5.0/5 "Super satisfied with Thunderbird" What do you dislike about Thunderbird? From my experience using Thunderbird it could be tricky to do some advanced stuff like exporting groups of rules into another client, eg. if I'm using ##### 3. Sync Issues Users experience **sync issues** that hinder performance, especially with large mailboxes and across multiple devices. [ See 2 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=1226072&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 4.5/5 "A more peaceful and secure work experience." What do you dislike about Thunderbird? Managing large mailboxes packed with thousands of messages, I’ve noticed the startup slows down—and tasks like search or sync can get resource-heavy. EE Elizabeth E. Small-Business (50 or fewer emp.) 5.0/5 "Synchronize personal and corporate email" What do you dislike about Thunderbird? Works perfectly for all my needs, but the function to create user does not exist yet to synchronize email on different computers. ##### 4. Bug Issues Users experience **bug issues** with Thunderbird, as large mailboxes lead to slow startup and resource-heavy tasks. [ See 1 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2498713&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 4.5/5 "A more peaceful and secure work experience." What do you dislike about Thunderbird? Managing large mailboxes packed with thousands of messages, I’ve noticed the startup slows down—and tasks like search or sync can get resource-heavy. ##### 5. Confusing Interface Users report a **confusing interface** in Thunderbird, particularly with differing modes and inconsistent features across versions. [ See 1 mentions ](https://www.g2.com/products/thunderbird/reviews?filters%5Bsentiment_snippet%5D=2230709&qs=pros-and-cons#reviews) See Related User Reviews ![Luca P.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Luca P.") LP Luca P. Small-Business (50 or fewer emp.) 5.0/5 "Robust open-source email suite for desktop and mobile" What do you dislike about Thunderbird? There is still a learning curve in a few areas. Unified folders have multiple entry points and can be conceptually different between IMAP and POP setu ## Top-Rated Alternatives [ ![Front](https://images.g2crowd.com/uploads/product/hd_favicon/1fe01c88159eb52ed7e93d98cdce08a5/front.svg "Front") Front 4.7/5(2,507) ](https://www.g2.com/products/front/reviews) [ ![Spike](https://images.g2crowd.com/uploads/product/hd_favicon/ad8d6b14c633bf13965f58ef40a77f0f/spike.svg "Spike") Spike 4.6/5(262) ](https://www.g2.com/products/spike/reviews) [ ![Mailbird](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_53eb6f8d708e7c322d572e28b89709cc/mailbird.png "Mailbird") Mailbird 3.6/5(101) ](https://www.g2.com/products/mailbird/reviews) [ View All Alternatives ](https://www.g2.com/products/thunderbird/competitors/alternatives) IF Ingrid F. PHP applications Small-Business (50 or fewer emp.) 5/24/2021 "Organize email" 4/5 What do you like best about Thunderbird? I like to organize different emails within a system, folders and different IMAP mail server connection. Integrated in GNU Linux system and add automatic account. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? Pierco access to connect local private server. I can't transfer email from PC to PC to other than Thunderbird. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: Email control and personal folder security. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Encrypted email and folder control within my platform, compatible with GNU Linux. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Insurance](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Insurance") UI Verified User in Insurance Mid-Market (51-1000 emp.) 11/9/2017 "Email Client with Best Anti-SPAM feature, Searching is awesome" 4/5 What do you like best about Thunderbird? The email client is neat and clean visual presentation. The SPAM protection is the best with Thunderbird so I chose this product for my Email Client need. When searching an email, it responses very fast and almost accurate. If I compare it with other free products, like eM-client and MailBird, Thunderbird is ahead. The quick filter and using of tag helps organizing and dealing with emails quickly. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? The working capability is good so unable to give any dislike but the looks (themes) should be added more often so user can redesign the appearance/looks as per their preference. The backup of emails or transfer to other email clients (like Microsoft Outlook) is not present nor easy. We need to have Outlook Express (Very old software) or some third party software for this conversion. The simple sharing of occasions among clients could be worth added if this component can work smoothly. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: Thunderbird is good looking, with simple setup, E-mail client. It works good and in my experience can support large size emails storage with very good SPAM protection mechanism. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? It is free with lots of features. The SPAM emails are filtered at very good level. It never crashes even when my computer suddenly shutdown (like on electricity issue). Review collected by and hosted on G2.com. Show More 11/24/2020 Current UserValidated ReviewerIncentivizedSource: G2 Gives Campaign ![Martino Nauli R.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Martino Nauli R.") MR Martino Nauli R. Senior Backend Developer Computer Software Small-Business (50 or fewer emp.) 3/11/2021 "simple and user friendly email client" 5/5 What do you like best about Thunderbird? first of all, thunderbird is free-software. you may use it for daily basis email-client. it has unlimited email filters, can manage multiple email account (I Have about 5 email account) Review collected by and hosted on G2.com. What do you dislike about Thunderbird? at lower resolution monitor, the display a little bit cramped. sometimes loading a little bit slow on mailbox that has hundred thousands of emails. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? the filter features help me to sort incoming emails, so i don't have to move each email to designated folder, just make combination of filters it automaticaly move to the folder Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Guy N.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Guy N.") GN Guy N. Owner Small-Business (50 or fewer emp.) 9/5/2020 "Incredible privacy oriented mail app that has all the bells and whistles of the paid apps." 5/5 What do you like best about Thunderbird? All the bells and whistles, for free. You can't get a better value propostion than that. I also highly value companies that respect your privacy. It's very easy to manage 12 email addresses while also keeping everything organized. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? The UI could be a little bit more modern. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I wanted a solution for the 12 email addresses that I manage. I previously used gmail, but privacy has become a bigger priority as of late, so I went looking for an alternative. I've tried all the email apps, and some of them were great, even as great as Thunderbird. But Thunderbird is free and more privacy oriented than the others. So it solves the problem of being able to receive and send emails without my privacy being invaded. And it has the same filtering capabilities as gmail, which I really need. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ![Santosh B.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Santosh B.") SB Santosh B. Senior Solution Architect Information Technology and Services Enterprise (\> 1000 emp.) 5/18/2021 "I am using it for 20 years in my 20.5 years IT Career, I wish I new it's name earlier." 5/5 What do you like best about Thunderbird? Mail Archiving, Easy Configurations, advanced configurations, plugins Review collected by and hosted on G2.com. What do you dislike about Thunderbird? It is free. Nobody appreciate a good thing if it is free. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: Easy configuration to several types of email configurations. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Easy email configuration. Multi email configurations, easy calendar plugin. security updates. Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Organic ![Erick D.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Erick D.") ED Erick D. Chief Executive Officer Music Small-Business (50 or fewer emp.) 10/13/2020 "Thunderbird is the answer to most email client grievances" 5/5 What do you like best about Thunderbird? One of the best features of Thunderbird is its full customization. You are able to make the client your own with a plethora of add-ons and settings to give you the exact experience you want out of an email client. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? I think one of the more difficult things about Thunderbird is finding your way around it at first, but once you find where all of the settings and features are, it is easy to set up Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Thunderbird is our main email client for all of our employees, it allows us to easily monitor multiple inboxes and set up our custom email signature Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite AT Andrew T. Technology Administrator Small-Business (50 or fewer emp.) 10/9/2020 "Great email client for anyone with one or multiple accounts" 5/5 What do you like best about Thunderbird? Agnostic to other email services; not locked in. Customizable. Easy to manage several accounts all in one place. Minimal interface, while able to add options. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? There really isn't anything major that I don't like about Thunderbird. The interface could use a little updating, but that's about it. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: Thunderbird is a great email client, and is able to handle many accounts from many email services. It has options for add-ons and theme customization, which is cool. If you are looking for a no nonsense email client, Thunderbird is a great option - and it's free! Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Putting all my accounts in one place. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite RH Ronald H. Mid-Market (51-1000 emp.) 9/28/2020 "Emails grouped in a single platform." 5/5 What do you like best about Thunderbird? I have the ability to be able to have a considerable amount of emails in one place in an orderly fashion. We automate the process of receiving and sending emails from my clients with personalized domains. It has many short term updates, making it a secure site. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? I don't like that the interface is opaque, it has very few colors. However, a good operation can be perceived. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: If you want to have the convenience to customize emails and add them together Thunderbird is the most viable option. You will not have problems of installation, configuration and execution is very good. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? It has excellent functionalities that help us to have customized hosting of our team's emails on the platform. It gives us the security we need, we don't have to worry about receiving spam or virus threat emails. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Saravanan P.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Saravanan P.") SP Saravanan P. Senior Digital Marketer Small-Business (50 or fewer emp.) 1/16/2021 "Best alternative to GMail" 4.5/5 What do you like best about Thunderbird? Very easy user interface comparing to GMail. We can view multiple emails in single dashboard. Very accurate filter options to search old emails. Email readability is very good comparing to GMail because of its large interface. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? At times we need to click get message button to receive new emails. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? We are using thunderbird more than 5 years. It gives good experience because of its unique user interface. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite AL Al L. ceo Small-Business (50 or fewer emp.) 1/28/2021 "Support forum https://groups.io/g/ThunderbirdEmail" 5/5 What do you like best about Thunderbird? Excellent email client....move from Windows Live Mail More support for Thunderbird at https://groups.io/g/ThunderbirdEmail Review collected by and hosted on G2.com. What do you dislike about Thunderbird? Using an add-on ( ImportExportTools NG) for automated backups. Trying to get information about the incremental backup / restore process Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Excellent tool Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Organic ## Work at Mozilla? Claim this profile to respond to reviews, update product info, and reach in-market buyers. 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