--- 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: '2026-07-13' parent_category: name: Collaboration & Productivity url: https://www.g2.com/categories/collaboration-productivity --- # Thunderbird Reviews **Vendor:** Mozilla **Category:** [Email Client Software](https://www.g2.com/categories/email-client) **Average Rating:** 4.3/5.0 **Total Reviews:** 340 ## About Thunderbird Thunderbird is a free, open-source email client developed by Mozilla, designed to provide users with a secure, customizable, and efficient email management experience. Compatible with Windows, macOS, and Linux, Thunderbird supports multiple email protocols, including POP and IMAP, allowing seamless integration with various email services. Its user-friendly interface and robust feature set make it a preferred choice for individuals and organizations seeking a reliable alternative to proprietary email clients. Key Features and Functionality: - Adaptive Junk Mail Controls: Thunderbird's intelligent spam filters learn from user actions to effectively identify and segregate unwanted emails, reducing inbox clutter. - Integrated RSS and Blog Reader: Users can subscribe to RSS feeds and blogs directly within Thunderbird, enabling them to stay updated with the latest news and content without leaving the application. - Saved Search Folders: This feature allows users to create virtual folders that display messages based on specific search criteria, facilitating efficient email organization and retrieval. - Global Inbox Support: Thunderbird enables the consolidation of multiple email accounts into a single inbox, streamlining email management for users with several accounts. - Message Grouping and Labeling: Users can group messages by attributes such as date, sender, or priority, and apply labels for easy categorization and prioritization. - Privacy Protection: To safeguard user privacy, Thunderbird automatically blocks remote images in emails from unknown senders, preventing potential tracking and data collection. - Extensibility with Add-ons and Themes: Thunderbird supports a wide range of add-ons and themes, allowing users to customize the application's functionality and appearance to suit their preferences. Primary Value and User Solutions: Thunderbird addresses common challenges faced by email users by offering a secure and customizable platform that enhances productivity and privacy. Its adaptive spam filters and privacy features protect users from unwanted emails and potential threats, while the integration of RSS feeds and blogs consolidates information management within a single application. The ability to manage multiple email accounts through a unified inbox, coupled with advanced search and organization tools, streamlines email workflows and reduces the time spent managing communications. Furthermore, Thunderbird's open-source nature and support for add-ons empower users to tailor the application to their specific needs, ensuring a personalized and efficient email experience. ## Thunderbird Pros & Cons **What users like:** - Users value Thunderbird for its **robust functionality** , including efficient email filtering and reliable folder management. (4 reviews) - Users appreciate the **ease of use** of Thunderbird, streamlining email management with powerful features and organization tools. (3 reviews) - Users value the **convenient customer support** options provided by Thunderbird, enhancing their email experience effortlessly. (2 reviews) - Users enjoy the **efficiency** of Thunderbird, benefiting from its quick setup and smooth email synchronization. (2 reviews) - Users appreciate the **efficient inbox management** of Thunderbird, streamlining multiple email accounts and organizing communications effortlessly. (2 reviews) - Security (2 reviews) - Chat Features (1 reviews) - Collaboration (1 reviews) - Communication (1 reviews) - Cross-Platform Compatibility (1 reviews) **What users dislike:** - Users find the **difficult setup** of Thunderbird cumbersome, especially when configuring email accounts and settings. (2 reviews) - Users find Thunderbird's **missing features** like complicated account setup and limited rule exporting frustrating and restrictive. (2 reviews) - Users experience **sync issues** with Thunderbird, particularly with large mailboxes and lack of multi-device synchronization. (2 reviews) - Users experience **bug issues** with Thunderbird, as large mailboxes slow startup and task performance significantly. (1 reviews) - Users find the **confusing interface** of Thunderbird challenging, especially with unified folders and varying extension compatibility. (1 reviews) - Users face **connection issues** with Thunderbird, making it challenging to manage rules across multiple devices effectively. (1 reviews) - Users find the lack of a **user creation function** limits email synchronization across different devices. (1 reviews) - Formatting Issues (1 reviews) - Frequent Updates (1 reviews) - Inadequate Filtering (1 reviews) ## Thunderbird Reviews ### 1. Best multi platform email client **Rating:** 5.0/5.0 stars **Reviewed by:** Jean Jacques T. | Director, Small-Business (50 or fewer emp.) **Reviewed Date:** March 14, 2022 **What do you like best about Thunderbird?** Mozilla Thunderbird is absolutely the best free email client you can get. It's very simple to use and it has an easy to use interface. There are tons of free addons available such a language dictionaries and many utilities. Moreover if you change computer even with a different operating systems, you can move that "Thunderbird" data folder to the new computer and BAM! You have it all there: emails, contacts, accounts and all the configuration. The best part is that Mozilla looks for your privacy and is composed by a huge community. **What do you dislike about Thunderbird?** I absolutely love Mozilla Thunderbird. I can't find anything I dislike and I'm using it a lot of years already. Something to improve could be the general search. I find the results a bit confusing for me. The fast search on a specific folder works wonderfully. **What problems is Thunderbird solving and how is that benefiting you?** I solve the problem of checking emails in several places. With Mozilla Thunderbird you can setup all your email accounts and work with all of them right in one easy to use place. I can benefit of having more time to dedicate to other important tasks, while having the "email thing" solved. ### 2. Message in a organisation with thunderbird **Rating:** 5.0/5.0 stars **Reviewed by:** Abhijeet K. | trainee engineer, Enterprise (> 1000 emp.) **Reviewed Date:** March 31, 2022 **What do you like best about Thunderbird?** We can use this application as mail/ message transfer or receiving application. In a organisation mail or message or anoucement etc is very critical and important thing and theses thing are do in a proper way is nessary then this application will help you. **What do you dislike about Thunderbird?** Some of the more features sholud be add like connect with gamil and connect with other mail application as well . The chat system need to upgrade and add a section for profile picture is also important. **Recommendations to others considering Thunderbird:** Yes I recommend this application for all organisation for internal communications. **What problems is Thunderbird solving and how is that benefiting you?** We use this application for mail / message/ announcement/ information etc delivery and receiving. Our whole internal communications is done by this software and we use this for mailing direct client as well . ### 3. Superb free email client **Rating:** 5.0/5.0 stars **Reviewed by:** Ajinkya M. | Deputy Manager Marketing, Mid-Market (51-1000 emp.) **Reviewed Date:** August 05, 2022 **What do you like best about Thunderbird?** Its free, customizable and easy to use. Anyone with bare minimum knowledge can set it up. I prefer thunderbird over outlook anytime. It even is better to understand than outlook. **What do you dislike about Thunderbird?** Could not find email recall option like there is in outlook. **What problems is Thunderbird solving and how is that benefiting you?** Its free and easy to setup and use. ### 4. Free and Open Source Mailing Platform! **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** March 21, 2022 **What do you like best about Thunderbird?** The best thing i like about thunderbird is the option to add multiple accounts on the same application. We can add different user accounts and access them without affecting each other. Another thing that i like is activity manager feature. Which allows us to view all the activites such as mail sent, received, mail filtering, deletion, etc. **What do you dislike about Thunderbird?** Thunderbird has simple user interface. Display pictures of account users are not displayed while receiving an email. This feature is almost available on other mailing softwares. This features needs to be added. Apart from this, all the features are good. **What problems is Thunderbird solving and how is that benefiting you?** In our organisation, we use thunderbird mailing application to work on project related tasks. This helps us in tracking activities. Mails are proof and cannot be unsend. By creating folders, thunderbird filters messages and moves the mail to the particular folder where it belongs. By using thunderbird, work is completed within the desired timeframe. ### 5. Perfect email solution **Rating:** 5.0/5.0 stars **Reviewed by:** Pablo José R. | Single point of contact (SPOC), Small-Business (50 or fewer emp.) **Reviewed Date:** September 29, 2022 **What do you like best about Thunderbird?** It is a light and fast software even been free does not affect to be a powerful solution. **What do you dislike about Thunderbird?** No calendar section to manage your daily routine. It is the only lack to replace Outlook in the office. **What problems is Thunderbird solving and how is that benefiting you?** It is a way to reduce costs without losing capabilities.And perfect to use in old computers. ### 6. Good Free Email Managment Software **Rating:** 4.0/5.0 stars **Reviewed by:** Ahmed Samy E. | Founder and Digital Marketing Consultant, Small-Business (50 or fewer emp.) **Reviewed Date:** May 14, 2022 **What do you like best about Thunderbird?** It's free, and user-friendly. And can be configured with multiple email addresses from my webmail via POP3 or IMAP to send and receive emails smoothly, and it also has a backup feature to save the content of my emails on my computer. **What do you dislike about Thunderbird?** I think that the configuration process of the email addresses in Thunderbird needs to be easier, and they also have to fix the RTL issue when writing Arabic and English words in the same phrase. **What problems is Thunderbird solving and how is that benefiting you?** being able to connect all of my email addresses in one simple interface for free is the main benefit of using Thunderbird. as it really helped me reduce the time wasted in logging in / out among multiple webmail accounts. ### 7. A great free alternative to Outlook **Rating:** 4.0/5.0 stars **Reviewed by:** Josh S. | Media and Communications Minister, Religious Institutions, Small-Business (50 or fewer emp.) **Reviewed Date:** December 08, 2021 **What do you like best about Thunderbird?** Free is always a great thing, but when it comes to a software that packs most of the major features of its pricey counterpart, it is even better. Thunderbird has all the features you want in an email client. You can set up multiple different accounts and inboxes and create many different folders to keep it all organized. There is a calendar integrated. If you are looking for a free equivalent to Outlook then this is your software. **What do you dislike about Thunderbird?** I have had some rare issues where the app would get stuck for some reason and would crash when trying to pull up my email. To remember this, I would have to remove and add that account back. It is not the end of the world but a minor inconvenience for sure. **What problems is Thunderbird solving and how is that benefiting you?** Thunderbird solves the problem of having multiple email inbox accounts all centralized in one area, so you don't have to check on different websites. It also has an excellent website composer to write well-compiled emails. ### 8. Thunderbird is an email client with great aesthetics and helped me centralize all my email accounts **Rating:** 3.5/5.0 stars **Reviewed by:** Supreet K. | Content Writer, Mid-Market (51-1000 emp.) **Reviewed Date:** April 23, 2022 **What do you like best about Thunderbird?** It's definitely the ability to manage multiple inboxes without switching between tabs. **What do you dislike about Thunderbird?** It doesn't support AMP emails. I receive many AMP emails but it doesn't render in Thunderbird while Gmail can render it. That's a huge downside for me. **What problems is Thunderbird solving and how is that benefiting you?** - Easily managing multiple inboxes - Can preview emails without double click like in Gmail - Enjoying good UI - A great calendar in the sidebar only has been helpful ### 9. Best free and open email client **Rating:** 5.0/5.0 stars **Reviewed by:** Sibongakonke N. | P, Small-Business (50 or fewer emp.) **Reviewed Date:** October 26, 2021 **What do you like best about Thunderbird?** Thunderbird is the email client of choice in my organization because it is easy to set up. I can import my emails and calendar events without additional steps. The application automatically detects the email protocol used by your company emails. Thunderbird has an easy-to-use address book that organizes people I interact with frequently, making it easy to communicate. I love the attachment reminder functionality that searches for mentions of 'attachments' in your email body and notifies you if you forget to attach the file. **What do you dislike about Thunderbird?** The user interface is packed too closely together which makes the application harder to use on smaller screens **Recommendations to others considering Thunderbird:** Thunderbird is a free and open email client for all operating systems. The application has modern email client functionality in a compact package, and it allows you to import your emails, events, and address book from your existing email client. **What problems is Thunderbird solving and how is that benefiting you?** I use Thunderbird for Company emails, calendar events, and address books. The application makes it easy to manage emails in a company environment because it supports Windows, Linux, and macOS. ### 10. Email on server **Rating:** 4.0/5.0 stars **Reviewed by:** Merlis L. | Warehouse manager, Small-Business (50 or fewer emp.) **Reviewed Date:** March 23, 2022 **What do you like best about Thunderbird?** Compatible with Linux and Windows operating systems, manage email with a comfortable interface to work with and direct connection to the server through a domain and selected port. SSL encrypted connection and access to any location. **What do you dislike about Thunderbird?** I use Thunderbird on different devices and I have to manually configure each one separately, I can't sync my accounts. It does not have a version for Android, this option would be perfect to have everything synchronized and user account. **What problems is Thunderbird solving and how is that benefiting you?** Send and receive emails with images and files of different types, activity control and calendar to manage my tasks. Connect my email from local and external servers to different devices of my work and home. ### 11. Fabulous Mailing Software **Rating:** 4.5/5.0 stars **Reviewed by:** Junaid K. | Analyst, Enterprise (> 1000 emp.) **Reviewed Date:** February 24, 2022 **What do you like best about Thunderbird?** The best thing that i like about Thunderbird is it allows you to open multiple tabs. Tabs help me in reading out different mails simultaneously. This has improved my performance and analytical skills to go in depth of any issue. **What do you dislike about Thunderbird?** Thunderbird has a fixed amount of storage for storing mails when we are offline. Once, the storage has reached its limits, it will not download mails that have after arrived it. This makes us outdated in our organisation. **What problems is Thunderbird solving and how is that benefiting you?** By using thunderbird, i am able to send and recieve mails from our customers and employees. We are able to track the history of the mails till date from the date of origination. I am able to send attachments that contains images, documents, links, etc. ### 12. Synchronize and download email in server application **Rating:** 4.0/5.0 stars **Reviewed by:** Ignacio S. | Office Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** May 31, 2022 **What do you like best about Thunderbird?** I like the simple interface, tools to use and sync email with SSL domain and auto-connect. Period of request to the server for the selected time. **What do you dislike about Thunderbird?** Very simple themes, built-in translator from external applications and no function to sync online with a paid account. **What problems is Thunderbird solving and how is that benefiting you?** Download all the emails on my desktop PC and Laptop, it is cross-platform and I have it installed on Windows and Linux. ### 13. A great email client with tons of features **Rating:** 5.0/5.0 stars **Reviewed by:** Justin E. | Java Developer, Entertainment, Small-Business (50 or fewer emp.) **Reviewed Date:** November 23, 2021 **What do you like best about Thunderbird?** Thunderbird allows me to sort my email into various categories using intelligent filters, including spam filtering and keeping my emails organized. I'm able to utilize Thunderbird with multiple accounts to keep everything in one place. **What do you dislike about Thunderbird?** The graphical interface Thunderbird employs does feel a bit dated. That's not something that would deter me from using the software, but it could benefit from a "facelift" of sorts. **Recommendations to others considering Thunderbird:** If you're looking for a desktop email client that can keep your emails organized easily, Thunderbird is suitable for you. **What problems is Thunderbird solving and how is that benefiting you?** With Thunderbird, I can manage all of my emails across multiple accounts. I have set up various filters to organize emails into different categories, such as business, personal, finance, etc. ### 14. Manage email from my PC **Rating:** 4.0/5.0 stars **Reviewed by:** Alberto G. | Financial manager, Small-Business (50 or fewer emp.) **Reviewed Date:** May 03, 2022 **What do you like best about Thunderbird?** Automatic connection and mount the folders in Thunderbird, manage files and SSL domain. Send email with sender and easy email modification. **What do you dislike about Thunderbird?** I don't like the requests to manage email, not being able to delete my contact list and email in the right-side panelist. **What problems is Thunderbird solving and how is that benefiting you?** Manage personal and work emails, order is important, management of attachments and virus scanning, compatible with Linux to prevent the spread of viruses in my system or server networks. ### 15. The ultimate in e-mail clients! **Rating:** 5.0/5.0 stars **Reviewed by:** Reverend F. | Pastor, Religious Institutions, Small-Business (50 or fewer emp.) **Reviewed Date:** November 03, 2021 **What do you like best about Thunderbird?** Thunderbird is easy to install, use, and add e-mail or RSS accounts to. It will also allow your saved items to be stored in "MBOX" format, making a recovery from unforeseen issues a breeze. **What do you dislike about Thunderbird?** I don't like the format of the presentation of settings... it takes a while to find the one setting that you actually need. **Recommendations to others considering Thunderbird:** As with any other login, case matters, so watch what you type when configuring for a mail server. **What problems is Thunderbird solving and how is that benefiting you?** This particular version (Linux version) solves the problem of finding a mail client with all the bells and whistles that will run on Linux, and expandability to get even more! ### 16. Thunderbird for IMAP **Rating:** 4.0/5.0 stars **Reviewed by:** Rizwan K. | Assistant Consultant, Enterprise (> 1000 emp.) **Reviewed Date:** March 09, 2022 **What do you like best about Thunderbird?** We can use as IMAP mail client, this is open source, free client for managing emails **What do you dislike about Thunderbird?** Sometime, it will just show trying to connect to server and takes times sending emails **What problems is Thunderbird solving and how is that benefiting you?** We are managing multiple email profiles with this app, we can just select profile from easily from which we want to send email ### 17. Easy to Use Email Client **Rating:** 5.0/5.0 stars **Reviewed by:** Aman G. | Business Development Executive, Information Technology and Services, Mid-Market (51-1000 emp.) **Reviewed Date:** July 10, 2021 **What do you like best about Thunderbird?** There are a couple of features which I liked a lot in Thunderbird and here are they: 1) The best feature is opening different tabs all at one point and accordingly sending emails from different accounts all at one point. 2) Thunderbird helps to customize the email draft with custom subject lines and attachments while sending emails to clients or people. 3) It helps to switch between email accounts for sending emails easily with drop-down options, unlike others. 4) It made Mail Merging smooth through the Email Commands it operates within (i.e. curly brackets). It easily picks up words from the excel sheet identified within curly brackets before sending the email. Mail merging happens by adding installing a free add-on from the list. **What do you dislike about Thunderbird?** There are a couple of things which I think can be better: 1) I do not see any in-built options to add a calendar. I need to manually install the extensions. 2) The user experience is smooth but the interface is not very good as compared to other email clients available in the market. 3) I do not have the option to send a meeting invite from Thunderbird. If I have to send an invite, I then need to login into the email account directly and send it. This is not the case with Outlook. **What problems is Thunderbird solving and how is that benefiting you?** The following problems Thunderbird helps me to solve: 1) Sending bulk emails with ease with custom subject lines because I was facing issues with Outlook to send and that also with custom subject lines. 2) Many Add-ons are available to be inserted in Thunderbird as compared to Outlook. 3) Manage Chat within Thunderbird and add Google Talk, etc. which is not the case with Outlook. 4) Dedicated Management of each Email Account effectively in a single-window whereas Outlook does not. In outlook, I have to manage each email account by opening it again n again. ### 18. Thunderbird is a great alternative to outlook **Rating:** 4.0/5.0 stars **Reviewed by:** Jennifer H. | P, Small-Business (50 or fewer emp.) **Reviewed Date:** August 31, 2021 **What do you like best about Thunderbird?** Thunderbird is customizable, free, and works as well, if not better than outlook. It is extremely easy to set up email accounts with. **What do you dislike about Thunderbird?** The look and feel takes some getting used to. Unless you want to customize it, it looks pretty old school. **Recommendations to others considering Thunderbird:** As mentioned prior, Thunderbird is extremely easy to set up your IMAP/pop email accounts with. You will most likely not need to manually enter your server information, which is extremely convenient. Visually, I think Thunderbird is simple but is customizable to your needs. There are a lot of add ons available to use within the program that range from productivity to visual customizations. I highly recommend this product! **What problems is Thunderbird solving and how is that benefiting you?** Outlook was continuously kicking me out of Gmail-based work email accounts, as well as crashing. I switched to Thunderbird and stopped having these issues. ### 19. Love Thunderbird **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Education Management | Mid-Market (51-1000 emp.) **Reviewed Date:** February 13, 2019 **What do you like best about Thunderbird?** I enjoy using Thunderbird as it is easy to use and you can do so much with it. I like that you can make folders to separate your emails so that your main folder does not get so clogged up. I like that you can make message filters so that people who send you email frequently can get the emails put in a specific folder. **What do you dislike about Thunderbird?** I dislike two things- one is I used to be able to have ReminderFox attached to Thunderbird. That helped me tremendously to remember tasks and it would give me reminders when I had the screen open. However, due to a recent update, that is no longer working. I wish there were more add-ons for Thunderbird. Also, I dislike the fact that it is not accessible from another desktop (or at least not that I know of). I can only seem to utilize this when I'm at work. **Recommendations to others considering Thunderbird:** It is a great email software to use, I think even better than Microsoft Outlook. Very user friendly and you can do a lot with it for your email. **What problems is Thunderbird solving and how is that benefiting you?** The business problems that I solve with Thunderbird is that it gives me access to my email in a really simple way. I also like that it really helps keep my emails all organized, that I can prioritize them with colors and tags. Very good software system! ### 20. The email client that does exactly what it says on the cover! **Rating:** 4.0/5.0 stars **Reviewed by:** Philip H. | Consultant, Small-Business (50 or fewer emp.) **Reviewed Date:** July 16, 2020 **What do you like best about Thunderbird?** * It collects my emails from multiple POP and IMAP email servers. * It stores my emails locally, so they can be backed up where I want them to be stored. **What do you dislike about Thunderbird?** * It sometimes objects to my Office 365 connection, although I've never lost any emails because of this issue. **What problems is Thunderbird solving and how is that benefiting you?** * It collects my emails from multiple POP and IMAP email servers. ### 21. Great Alternative to Outlook **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer & Network Security | Small-Business (50 or fewer emp.) **Reviewed Date:** December 15, 2021 **What do you like best about Thunderbird?** This is lightweight and not bloated. I have not ever experienced any strange errors like I have with Outlook. So for Windows-based machines, this is an alternative. **What do you dislike about Thunderbird?** Transferring data from one PC to another can be tricky but is possible. It is actually harder for Thunderbird to Thunderbird transfers. The search feature often reveals too much data to sift through. I generally use the filter option which is much cleaner. **What problems is Thunderbird solving and how is that benefiting you?** I have had many customers get problems with Outlook after their pst file gets too large. However, even shrinking it does not get rid of the problems and after awhile to problems seem to occur even after repairs. Thunderbird is clean and simple. ### 22. excellent free email client with calender **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Higher Education | Small-Business (50 or fewer emp.) **Reviewed Date:** December 23, 2021 **What do you like best about Thunderbird?** I have been using Thunderbird for my email accounts for many years now. It is easy and fast to install, very intuitive to use, and of course, totally free. I find it much more user-friendly than commercial alternatives like Outlook. The three features I like most about Thunderbird are: (1) organize all your email accounts in one place (2) structure your emails with folders, subfolders, rules, and filters (3) use the integrated calendar option Now Thunderbird has an integrated PDF-Reader so that you can easily open attachments within Thunderbird. **What do you dislike about Thunderbird?** Except for occasional crashes (maybe twice per year), I have nothing to complain about the email client. The synchronization of the calendar is sometimes a bit slow. **What problems is Thunderbird solving and how is that benefiting you?** Thunderbird is the email client that I have used for all my email addresses for many years. I particulary appreciate that I can organize several email accounts in one place. ### 23. Synchronize server email **Rating:** 4.0/5.0 stars **Reviewed by:** Darryn T. | Finance System, Mid-Market (51-1000 emp.) **Reviewed Date:** January 19, 2022 **What do you like best about Thunderbird?** I like Thunderbird's automatic server connection, connection by domain, and SSL encrypted security from the device. It is free and compatible with Windows and Linux, perfect for my daily work. Divide by folder the mailbox, calendar, and pre-designed themes available. **What do you dislike about Thunderbird?** Some details are needed to make it perfect; for example, Android application, system user login, and data export and domain access connection easier to perform. **What problems is Thunderbird solving and how is that benefiting you?** I use Thunderbird to sync my email on my Windows and Linux PC; each email I can sign and search an extensive list. ### 24. Keeps my Emails Organized **Rating:** 5.0/5.0 stars **Reviewed by:** Naomi H. | Owner, Small-Business (50 or fewer emp.) **Reviewed Date:** November 12, 2021 **What do you like best about Thunderbird?** I love having multiple email inboxes in one place, making it much easier to stay organized. I can even drag and drop emails from one account to another. **What do you dislike about Thunderbird?** A recent update affected some of my add-ons, causing them to no longer work. The biggest one for me was no longer having the ability to color-code my inboxes according to which account it is. I finally figured out a work-around by tagging emails as they come in and setting each tag to a different color. I'm a happy camper again! **What problems is Thunderbird solving and how is that benefiting you?** I currently have seven email accounts that I can track at a glance. Email organization and cleanup have never been more effortless! ### 25. Best Email Client **Rating:** 5.0/5.0 stars **Reviewed by:** Matt H. | Web Designer, Small-Business (50 or fewer emp.) **Reviewed Date:** November 16, 2021 **What do you like best about Thunderbird?** Thunderbird is the best desktop application for email. I can check multiple email accounts at a glance, as well as keep track of my schedule. **What do you dislike about Thunderbird?** The one downside is that there is no easy way to color-code your email accounts. I found a workaround, but this should be a fundamental option. **What problems is Thunderbird solving and how is that benefiting you?** I no longer need to keep switching between email accounts nor have multiple tabs open, using up precious browser resources. ### 26. Synchronize email **Rating:** 4.5/5.0 stars **Reviewed by:** Gauna G. | Manager and Clerk, Mid-Market (51-1000 emp.) **Reviewed Date:** October 22, 2021 **What do you like best about Thunderbird?** I like to synchronize all kinds of emails from different servers, encrypt passwords and emails sent and received to the device. Calendar and compatible with Windows and Linux. Speak within the same platform, topics and writing options. **What do you dislike about Thunderbird?** I do not like the installation of the official page in Linux, a lot of work and does not have a package ready without compiling. I do not have access to the cloud for backup, I cannot migrate information with custom options from Thunderbird to my second device with Thunderbird. **Recommendations to others considering Thunderbird:** Download, synchronize with the server and enjoy a stable, secure and Open Source system. **What problems is Thunderbird solving and how is that benefiting you?** Synchronize different emails from different servers available on the Internet and locally, message encryption and direct server password. ### 27. Open source and email management is great **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** January 19, 2022 **What do you like best about Thunderbird?** It is open-source that is free of cost and very fast to receive and load heavy emails. The filter part is very useable and practical with a lot of conditions to search easier **What do you dislike about Thunderbird?** Drag and drop functionality is missing. Updates are significantly less available. **What problems is Thunderbird solving and how is that benefiting you?** I am using it internally for office work and never found any problem even sharing heavy files, also Chat functionality is very useful to interact ### 28. Synchronize email from external server **Rating:** 4.5/5.0 stars **Reviewed by:** Diego J. | Literature professor, Mid-Market (51-1000 emp.) **Reviewed Date:** December 01, 2021 **What do you like best about Thunderbird?** Synchronize emails with folders in the system, spam folders and sending by user groups, multiplatform system for Windows and Linux distributions. Domain connection with SSL security. **What do you dislike about Thunderbird?** I don't like transferring my settings to another device, transferring my email settings in Thunderbird to another device doesn't work well because of the passwords associated with each email and server. It does not have a version for Android. **What problems is Thunderbird solving and how is that benefiting you?** I use Thunderbird to synchronize different mail on my PC, work and personal, answer in group selection and calendar with homework schedule. ### 29. Email, calendar and local server management. **Rating:** 3.5/5.0 stars **Reviewed by:** Gregorio G. | Office Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** August 26, 2021 **What do you like best about Thunderbird?** I like many features of Thunderbird. 1) Connection with external and internal (local) GNU Linux server. 2) Connection by imap and pop3 for automatic download. 3) Calendar and message between user. 4) Server and Thunderbird folder management. 5) Tool to sign and place user details information to send email. **What do you dislike about Thunderbird?** Some important options and tools are missing: 1) Compatible with Android and sync email in Thunderbird with Smart phone. 2) Account to synchronize Thunderbird settings, password and data on different devices. **Recommendations to others considering Thunderbird:** Download for GNU Linux and Windows, synchronize and manage external and internal server email, you do not need to enter the web, free and open source for greater security and stability by development. **What problems is Thunderbird solving and how is that benefiting you?** Synchronize external server email by imap, sign email when sending direct server encryption. Calendar and important event note log in Thunderbird. ### 30. Best Emailing Program I Have Used so Far **Rating:** 5.0/5.0 stars **Reviewed by:** Esmeralda S. | IT Recruiter, Small-Business (50 or fewer emp.) **Reviewed Date:** September 03, 2021 **What do you like best about Thunderbird?** It's very user-friendly. Setting up an account is easy and fast, and the basic design helps to have a clearer understanding of the program. **What do you dislike about Thunderbird?** Having to download add-ons, like mail-merge, when it could be a pre-integrated function in the app. Also, the mobile app does not allow for attachments to be opened. **Recommendations to others considering Thunderbird:** Excellent for emails, great user experience, easy to use, straightforward. **What problems is Thunderbird solving and how is that benefiting you?** Serves as my leading mailing service for work, so it has helped me communicate effectively with my coworkers and reply to emails from candidates applying to my job postings. ### 31. My emails are now sorted, thanks to Thunderbird! **Rating:** 5.0/5.0 stars **Reviewed by:** Shivbhadrasinh G. | Shivbhadrasinh Gohil, Small-Business (50 or fewer emp.) **Reviewed Date:** November 23, 2021 **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. **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! **What problems is Thunderbird solving and how is that benefiting you?** I am using Thunderbird to manage emails from multiple accounts. ### 32. Synchronize email from external server **Rating:** 4.0/5.0 stars **Reviewed by:** Andrea S. | Sales Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** October 12, 2021 **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. **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. **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. **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. ### 33. Synchronize server email **Rating:** 4.0/5.0 stars **Reviewed by:** Eglis T. | Office Manager, Mid-Market (51-1000 emp.) **Reviewed Date:** September 15, 2021 **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. **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. **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. **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. ### 34. Open source with good quality of email client **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Small-Business (50 or fewer emp.) **Reviewed Date:** January 31, 2022 **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 **What do you dislike about Thunderbird?** There is no automatic spam filtering and no spam subcategory **What problems is Thunderbird solving and how is that benefiting you?** Viewing the email on my ubuntu system ### 35. "For reliable and easy of use mozilla thunderbird"use **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Internet | Mid-Market (51-1000 emp.) **Reviewed Date:** September 07, 2021 **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. **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. **Recommendations to others considering Thunderbird:** If you are working for a continuous flow of mails with minimum resource I will recommend thunderbird. **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. ### 36. One of the most useful mail application **Rating:** 5.0/5.0 stars **Reviewed by:** Huseyin D. | System Specialist, Mid-Market (51-1000 emp.) **Reviewed Date:** September 21, 2021 **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. **What do you dislike about Thunderbird?** Till now, nothing yet. It gives the best solution, and it is free. What can you expect more? **Recommendations to others considering Thunderbird:** Don't hesitate to use it if you need a platform for using mail. **What problems is Thunderbird solving and how is that benefiting you?** I'm using it for my mailing work. ### 37. A good email manager, where you can configure your accounts. **Rating:** 3.5/5.0 stars **Reviewed by:** Brizaira M. | Support Engineer and Incident Manager,, Mid-Market (51-1000 emp.) **Reviewed Date:** August 18, 2021 **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. **What do you dislike about Thunderbird?** In the part of the chat and calendars could improve a little more, the accessibility and configuration. **Recommendations to others considering Thunderbird:** it is easy to set up and use **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 ### 38. Handy way to handle your emails **Rating:** 5.0/5.0 stars **Reviewed by:** Margaret C. | Content and customer support manager, Small-Business (50 or fewer emp.) **Reviewed Date:** May 17, 2021 **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. **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. **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. ### 39. The Best **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Writing and Editing | Small-Business (50 or fewer emp.) **Reviewed Date:** November 03, 2021 **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. **What do you dislike about Thunderbird?** I dislike the design, but for a free software it's ok. **What problems is Thunderbird solving and how is that benefiting you?** I can have all my emails accounts in just one place. ### 40. I use it every day **Rating:** 4.5/5.0 stars **Reviewed by:** Răzvan T. C. | Psychologist, Small-Business (50 or fewer emp.) **Reviewed Date:** January 24, 2021 **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. **What do you dislike about Thunderbird?** I really can't think of anything I dislike about Thunderbird. **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. ### 41. Organize email **Rating:** 4.0/5.0 stars **Reviewed by:** Ingrid F. | PHP applications, Small-Business (50 or fewer emp.) **Reviewed Date:** May 24, 2021 **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. **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. **Recommendations to others considering Thunderbird:** Email control and personal folder security. **What problems is Thunderbird solving and how is that benefiting you?** Encrypted email and folder control within my platform, compatible with GNU Linux. ### 42. Email Client with Best Anti-SPAM feature, Searching is awesome **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Insurance | Mid-Market (51-1000 emp.) **Reviewed Date:** November 09, 2017 **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. **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. **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. **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). ### 43. simple and user friendly email client **Rating:** 5.0/5.0 stars **Reviewed by:** Martino Nauli R. | Senior Backend Developer, Computer Software, Small-Business (50 or fewer emp.) **Reviewed Date:** March 11, 2021 **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) **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. **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 ### 44. Incredible privacy oriented mail app that has all the bells and whistles of the paid apps. **Rating:** 5.0/5.0 stars **Reviewed by:** Guy N. | Owner, Small-Business (50 or fewer emp.) **Reviewed Date:** September 05, 2020 **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. **What do you dislike about Thunderbird?** The UI could be a little bit more modern. **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. ### 45. I am using it for 20 years in my 20.5 years IT Career, I wish I new it's name earlier. **Rating:** 5.0/5.0 stars **Reviewed by:** Santosh B. | Senior Solution Architect, Information Technology and Services, Enterprise (> 1000 emp.) **Reviewed Date:** May 18, 2021 **What do you like best about Thunderbird?** Mail Archiving, Easy Configurations, advanced configurations, plugins **What do you dislike about Thunderbird?** It is free. Nobody appreciate a good thing if it is free. **Recommendations to others considering Thunderbird:** Easy configuration to several types of email configurations. **What problems is Thunderbird solving and how is that benefiting you?** Easy email configuration. Multi email configurations, easy calendar plugin. security updates. ### 46. Thunderbird is the answer to most email client grievances **Rating:** 5.0/5.0 stars **Reviewed by:** Erick D. | Chief Executive Officer, Music, Small-Business (50 or fewer emp.) **Reviewed Date:** October 13, 2020 **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. **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 **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 ### 47. Great email client for anyone with one or multiple accounts **Rating:** 5.0/5.0 stars **Reviewed by:** Andrew T. | Technology Administrator, Small-Business (50 or fewer emp.) **Reviewed Date:** October 09, 2020 **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. **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. **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! **What problems is Thunderbird solving and how is that benefiting you?** Putting all my accounts in one place. ### 48. Emails grouped in a single platform. **Rating:** 5.0/5.0 stars **Reviewed by:** Ronald H. | Mid-Market (51-1000 emp.) **Reviewed Date:** September 28, 2020 **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. **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. **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. **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. ### 49. Best alternative to GMail **Rating:** 4.5/5.0 stars **Reviewed by:** Saravanan P. | Senior Digital Marketer, Small-Business (50 or fewer emp.) **Reviewed Date:** January 16, 2021 **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. **What do you dislike about Thunderbird?** At times we need to click get message button to receive new emails. **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. ### 50. Support forum https://groups.io/g/ThunderbirdEmail **Rating:** 5.0/5.0 stars **Reviewed by:** Al L. | ceo, Small-Business (50 or fewer emp.) **Reviewed Date:** January 28, 2021 **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 **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 **What problems is Thunderbird solving and how is that benefiting you?** Excellent tool ## Thunderbird Discussions - [What is the use of Thunderbird software?](https://www.g2.com/discussions/what-is-the-use-of-thunderbird-software) - 1 comment, 1 upvote - [Has anyone managed to use the copy and paste function from excell?](https://www.g2.com/discussions/12306-has-anyone-managed-to-use-the-copy-and-paste-function-from-excell) - 2 comments, 1 upvote - [Has anyone managed to use the copy and paste function from excell?](https://www.g2.com/discussions/30110-has-anyone-managed-to-use-the-copy-and-paste-function-from-excell) - 1 comment - [View Thunderbird pricing details and edition comparison](https://www.g2.com/products/thunderbird/reviews?page=2§ion=pricing&secure%5Bexpires_at%5D=2026-07-15+13%3A39%3A19+-0500&secure%5Bsession_id%5D=e56d26f7-49c2-4b08-9da2-fdfb23382b59&secure%5Btoken%5D=a85289b7abb3791bb729925eb9fdf5b615c6355e2d7299a66082d3a37fdde796&format=llm_user) ## Thunderbird Features **Inbox Tools** - Unified Inbox - Filters - Reminders - Notifications **Sorting & Filtering** - Attachment Search - Tags - AI Sorting - Predefined Rules **Coordination Tools** - Calendar - Contacts - Task Management **Integrations** - Microsoft Outlook Integration - Gmail Integration - Apple Calendar Integration **Software Options** - Desktop Application - Mobile Application **Time Management** - Unified Inbox - Email Automation - Snooze **Generative AI** - AI Text Generation - AI Text-to-Speech - AI Text Summarization **Email Client - Agentic AI** - Autonomous Task Execution - Cross-system Integration **Agentic AI - Email Management** - Autonomous Task Execution - Cross-system Integration ## Top Thunderbird Alternatives - [Front](https://www.g2.com/products/front/reviews) - 4.7/5.0 (2,442 reviews) - [Spike](https://www.g2.com/products/spike/reviews) - 4.6/5.0 (250 reviews) - [Mailbird](https://www.g2.com/products/mailbird/reviews) - 3.6/5.0 (100 reviews)