Comprehensive Review of Mozilla Thunderbird ESR

Mozilla Thunderbird ESR is a free and open-source email client designed for Windows users. It provides a robust platform for handling emails, newsfeeds, chats, and calendars. The program emphasizes user customization, making it easy to set up according to individual preferences. Thunderbird promotes open standards, ensuring compatibility and communication across various services, thereby offering users greater freedom and choice in their communication methods.

This annual extended support release is tailored for those who seek new features on a yearly basis while benefiting from monthly security and stability updates. With its user-friendly interface and strong focus on open-source principles, Thunderbird ESR stands out as a reliable tool for managing personal and professional communications effectively.

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Is Mozilla Thunderbird ESR ru safe?

100/100

Score result: Clean

This file passed a comprehensive security scan using VirusTotal technology. It is safe to download.

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Scan Info

Last scan
Wednesday, January 7, 2026
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VirusTotal · Full report

File Integrity

File
140.6.0.exe
SHA256
d3ab9f1a39b0717c55b0820bc8d7858ebf142d14ece2332eb6363339a388dd51
SHA1
4905c168e07e2a3732bea6c51edf80fe8ec2afaf

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Mozilla Thunderbird ESR ru has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of viruses, malware, or spyware. For more information, visit our Security and Trust Center