Comprehensive Review of Mozilla Thunderbird ESR

Mozilla Thunderbird ESR is a free and open-source email client designed for users seeking stability and security. This annual extended support release focuses on delivering all new features once a year and provides monthly security updates. Thunderbird allows easy setup and customization, making it suitable for a variety of users. It emphasizes open standards, promoting interoperability between different platforms and services, which is a significant advantage in today’s digital communication landscape.

As a versatile tool, Thunderbird also supports newsfeeds, chat, and calendaring, catering to diverse communication needs. Users can enjoy a flexible and user-friendly interface that can be tailored to individual preferences. With its commitment to user freedom and choice, Mozilla Thunderbird ESR stands out as a reliable utility for managing email and other communication forms.

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Is Mozilla Thunderbird ESR sr 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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File Integrity

File
140.6.0.exe
SHA256
c139eb92ff67393faeddea75ff15758c5feb560d3e0ff05e7a093f7e6c4ea1b3
SHA1
8f7637161fbb25134c3534b0c31baf5643edaf9b

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Mozilla Thunderbird ESR sr 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