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Editors' Review · September 16, 2025

In-Depth Review of Mozilla Thunderbird ESR

Mozilla Thunderbird ESR is a powerful email client tailored for Windows users, providing an extensive suite of features for managing emails, newsfeeds, chats, and calendars. This free, open-source software focuses on delivering an annual upgrade cycle with new functionalities while ensuring monthly security and stability updates. It emphasizes open standards to promote interoperability, making it a top choice for users who value customization and control over their communication tools.

The setup process is straightforward, allowing users to configure their environment to meet individual needs. Thunderbird’s interface is intuitive, with various add-ons and themes available for enhanced personalization. Its commitment to user freedom is reflected in its adaptable design, ensuring a seamless experience across different communication channels. Overall, Mozilla Thunderbird ESR is a dependable and versatile option for users seeking effective management of their digital correspondence.

Technical

Title
Mozilla Thunderbird ESR dsb 140.2.1 for Windows
Requirements
Windows 11
License
Free
Latest update
Author
Mozilla Foundation
SHA-1
0db2715ededbe08d29fb447dcab2ee8053cc8bd9
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 dsb. 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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