Builder

thunderbird

1 Tool

Thunderbird is a free, open-source email client and personal information manager covering email, calendars, contacts, and chat, available across Windows, macOS, Linux, and mobile platforms. First released in 2004, it is developed by MZLA Technologies Corporation, a subsidiary of the Mozilla Foundation established in 2020, and is governed by the community-elected Thunderbird Council. In 2025 the project launched Thunderbird Pro, a set of paid cloud services alongside its free core client.