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Editors' Review · September 16, 2025

Mozilla Thunderbird ESR: A Reliable Email Client

Mozilla Thunderbird ESR is a free and open-source email client designed for Windows users, offering a comprehensive suite of features that enhance email management, newsfeed integration, chat capabilities, and calendaring tools. This program emphasizes ease of setup and customization, allowing users to tailor their experience according to personal preferences. The extended support release ensures that users receive new features annually while maintaining monthly stability and security updates.

The program promotes open standards, enabling seamless communication across various platforms and services. With its focus on user freedom and choice, Thunderbird ESR stands out as a versatile email solution. Its functionality is complemented by a commitment to security and stability, making it an excellent choice for users who require a dependable email client for everyday use.

Technical

Title
Mozilla Thunderbird ESR cs 140.2.1 for Windows
Requirements
Windows 11
License
Free
Latest update
Author
Mozilla Foundation
SHA-1
42f41039c8f2caee5a9afb815ebbf89c33b6c304
Filename
140.2.1.exe

Program available in other languages



Changelog

We don’t have any change log information yet for version 140.2.1 of Mozilla Thunderbird ESR cs. Sometimes publishers take a little while to make this information available, so please check back in a few days to see if it has been updated.

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