Mozilla is turning its Thunderbird open source email client into a full communications platform with the launch of Thundermail and Thunderbird Pro.

Thunderbird’s developers are planning to compete with Gmail and other email providers by offering paid “pro” tier services, including @thundermail.com email addresses and new services such as an ...

Mozilla recently revealed plans for a new service ... old Thunderbird email client -- will be an email service similar to Gmail that can be used within Thunderbird and on the web.

Mozilla is expanding its Thunderbird email client into a full-fledged communications platform, launching Thundermail and Thunderbird Pro to compete directly with Gmail by Alphabet Inc.'s GOOG ...

Mozilla may introduce limited free tiers. Thunderbird was losing users regularly to "rich" ecosystems with local clients and remote services. Gmail and Office 365 are the main competitors.