Mozilla Thunderbird Review

mozilla thunderbird

Looks like Outlook, isn’t Microsoft.

The first is to offer more than Microsoft’s Outlook, the default choice for businesses that need to manage their email communications. And the second challenge is to offer more than Gmail, the default choice for individuals who need to manage their email communications.

Mozilla’s Thunderbird shows just how hard it is for any email client software to meet both those challenges. The service itself is more than adequate, and the volunteers who have built and grown the open source project have put serious thought into improving the user experience. Mail account setup, which has always been one of the biggest bugbears of switching clients, is now relatively simple. Instead of searching for IMAP, SMTP and SSL settings (and understanding what they are), Thunderbird now only asks for name, email address and password.

If you can just remember your password, you’ll be collecting your emails right away. Other aspects of Thunderbird match Mozilla’s overall look and feel. Mozilla’s Firefox browser was one of the first to introduce tabs, and that essential tool has been brought over to Thunderbird. Leave multiple emails open and you can switch between them as easily as you switch between tabs on your browser (and equally run the risk of hitting open tab overload.)

Like Gmail, Thunderbird scans your email before you send it and looks for words like “attachment” to remind you that you forget to attach your file, and the quick filter toolbar makes filtering a breeze. When you want to keep your inbox organized and shoot incoming mail directly into a folder, you’ll find setting up the parameters quick and easy.

mozilla thunderbird

Adding email accounts is a breeze.

Thunderbird has even teamed up with third-party providers to supply personalized email addresses. Just choose an address, such as, and Thunderbird will set it all up. A host of add-ons and themes add a bunch of extra features, including calendars, encryption, and contact tools. For a free email client, Thunderbird certainly has a great deal to recommend it. But the popularity of the software has waned over the last few years. Although Mozilla has continued to roll out security updates and ideas from Firefox, Thunderbird has received no major update since 2012. In December 2015, Mitchell Baker, Mozilla’s executive chairwoman, said that the foundation would like to stop supporting the software altogether, arguing that its continued support drew resources away from projects, like Firefox, that have a greater impact on the industry. The long lag time that can strike users with heavy inboxes is something that’s unlikely to be fixed.

The reason for Thunderbird’s demise has nothing to do with its functions, which are all useful and well-designed. It has everything to do with the fact that the software is a desktop tool in a world that has now been mobile for some time. And while businesses still need a comprehensive and secure email client for their office work, that need is now largely met by enterprise software solutions that bundle in calendar and other functions.

Thunderbird does the job it was designed to do but many users will find themselves wondering whether that job hasn’t now been made obsolete.


Mozilla Thunderbird is a beautiful, well-made email client for a world that isn’t sure it needs email clients.

Usability: 8 /10 Speed: 7 /10 Features: 7 /10 Support: 6 /10 Pricing: 10 /10

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