Mozilla Thunderbird ESR

Email, calendar and messaging in one application AI summary
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Summary
Mozilla Thunderbird ESR is a free and open source email client that also handles newsfeeds, chat and calendars. It is easy to set up and customize. It is built around the use and promotion of open standards, rejecting closed platforms and services that cannot communicate with each other, so that users have freedom and choice in how they communicate. This version is the official annual extended support release, intended for users who want all available new features on an annual basis along with stability and security fixes delivered monthly.
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Thunderbird is a free and open source email, newsfeed, chat, and calendaring client, that’s easy to set up and customize. One of the core principles of Thunderbird is the use and promotion of open standards - this focus is a rejection of our world of closed platforms and services that can’t communicate with each other. We want our users to have freedom and choice in how they communicate. This is the official annual extended support release. This release is intended for users who want all available new features on an annual basis and stability/security fixes on a monthly basis.
Technical details about Mozilla Thunderbird ESR
Category
Productivity
Age Rating
USK ab 0 Jahren
Price
Free
Size
153,0 MB
Last updated in Microsoft Store
2026-11-10
App Store Rating
4.3 ★
Devices
Windows
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