--- 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) SG Shivbhadrasinh G. Shivbhadrasinh Gohil Small-Business (50 or fewer emp.) 11/23/2021 "My emails are now sorted, thanks to Thunderbird!" 5/5 What do you like best about Thunderbird? The clean interface that helps me manage my emails from multiple accounts is what I like the best. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? The configuration steps can be a little bit complex for a non-tech person but that is manageable though! Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I am using Thunderbird to manage emails from multiple accounts. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite AS Andrea S. Sales Manager Small-Business (50 or fewer emp.) 10/12/2021 "Synchronize email from external server" 4/5 What do you like best about Thunderbird? Synchronize different emails and encrypted connection from device to server. Synchronize without limits, chat between people on the platform and smart calendar. Theme. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? I do not have the option to search through this synchronized email, I have a very extensive list and I have to search one by one. I do not have a version for user registration and synchronize all my email and registered password. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: Download Thunderbird on your PC and synchronize all email without using the web browser, send, receive and organize your tasks. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Synchronize and control email from different local and external servers, compatible with GNU Linux email service. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ET Eglis T. Office Manager Mid-Market (51-1000 emp.) 9/15/2021 "Synchronize server email" 4/5 What do you like best about Thunderbird? Options to synchronize email from private and shared server, section by folder, spam and send documents. Encrypted connection compatible, calendar available, attractive themes, extra functions and free code compatible with Linux and Windows. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? I do not have a version for Android, I would like a version with a user session to synchronize my configuration and data from different devices automatically. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: Download and install on your PC, synchronize emails from different servers and control by folder, keep order on your PC. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Synchronize email from the contracted shared server, each user receives and sends email from a PC connected to the online server, we do not need to open a web browser to check email. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Information Technology and Services](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Information Technology and Services") UI Verified User in Information Technology and Services Small-Business (50 or fewer emp.) 1/31/2022 "Open source with good quality of email client" 4.5/5 What do you like best about Thunderbird? The way it provides to see all the email in one screen and lets you control over the sent email and other category Review collected by and hosted on G2.com. What do you dislike about Thunderbird? There is no automatic spam filtering and no spam subcategory Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? Viewing the email on my ubuntu system Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic ![Verified User in Internet](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Internet") UI Verified User in Internet Mid-Market (51-1000 emp.) 9/7/2021 ""For reliable and easy of use mozilla thunderbird"use" 5/5 What do you like best about Thunderbird? Thunderbird is an open source,supports on various platforms such as Windows,Linux,mac,OS,Unix, BSD. Thunderbird supports different protocols such as IMAP, POP3, SMTP. Easy to set up. Filter makes easy to find previous mails,easy to search by mail id,subject line,contact number. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? For receiving new mails we have to click on get message every time you receive new mail. Interface is outdated. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: If you are working for a continuous flow of mails with minimum resource I will recommend thunderbird. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I am working in ISP where Thunderbird tool is used for mailing purpose as large numbers of mails are send and received daily.As we have to send uptime,downtime, raise complaint via mail and more. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite HD Huseyin D. System Specialist Mid-Market (51-1000 emp.) 9/21/2021 "One of the most useful mail application" 5/5 What do you like best about Thunderbird? It supports many various mail types, and you can use it to monitoring your mailing before sending. You can review your mail and correct it if there is any problem. It also supports most of the mail platform and easy to connect your accounts on it. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? Till now, nothing yet. It gives the best solution, and it is free. What can you expect more? Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: Don't hesitate to use it if you need a platform for using mail. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I'm using it for my mailing work. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Brizaira M.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Brizaira M.") BM Brizaira M. Support Engineer and Incident Manager, Mid-Market (51-1000 emp.) 8/18/2021 "A good email manager, where you can configure your accounts." 3.5/5 What do you like best about Thunderbird? The facility to add and configure IMAP and POP3 accounts and its user-friendly interface and management, from differents mails accounts. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? In the part of the chat and calendars could improve a little more, the accessibility and configuration. Review collected by and hosted on G2.com. Recommendations to others considering Thunderbird: it is easy to set up and use Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I have been able to resolve and facilitate the use of corporate email for users of the organization Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 Gives Campaign MC Margaret C. Content and customer support manager Small-Business (50 or fewer emp.) 5/17/2021 "Handy way to handle your emails" 5/5 What do you like best about Thunderbird? The ability to unite all my emails in one handy app is what I like best in Thunderbird. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? Sometimes it can be hard to add new emails to Thuderbird, and not all options while adding are easy and obvious. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I have a personal email and several work emails and Thunderbird makes it easy to use them all at once. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic ![Verified User in Writing and Editing](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Writing and Editing") UW Verified User in Writing and Editing Small-Business (50 or fewer emp.) 11/3/2021 "The Best" 4.5/5 What do you like best about Thunderbird? It's the best email free software to use. You are able to configurate all your emails accounts in just one place and have easy access. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? I dislike the design, but for a free software it's ok. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I can have all my emails accounts in just one place. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Răzvan T. C.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Răzvan T. C.") RC Răzvan T. C. Psychologist Small-Business (50 or fewer emp.) 1/24/2021 "I use it every day" 4.5/5 What do you like best about Thunderbird? It has integraton with Google calendar, so I can schedule meetings and tasks in Thunderbird then use an Android mail app on my phone to do the same and receive notifications. Great for mail and taking notes. It works on Linux and other platforms. Has many extensions you can benefit from. Review collected by and hosted on G2.com. What do you dislike about Thunderbird? I really can't think of anything I dislike about Thunderbird. Review collected by and hosted on G2.com. What problems is Thunderbird solving and how is that benefiting you? I use it at home and my office and all my meetings, notes and e-mails are in sync. It has a small memory footprint. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ## Work at Mozilla? Claim this profile to respond to reviews, update product info, and reach in-market buyers. 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