Comprehensive Overview of Mozilla Thunderbird ESR

Mozilla Thunderbird ESR is a free, open-source email and communication client designed for Windows users who prioritize stability and security. This extended support release offers new features annually while providing monthly updates for stability and security fixes. Users can easily set up and customize their email, chat, and calendaring functionalities, ensuring a tailored communication experience.

One of Thunderbird's key principles is its commitment to open standards, allowing seamless communication across various platforms. This focus on user freedom and choice makes it an attractive option for individuals looking for a versatile email client. With its user-friendly interface and robust features, Thunderbird ESR stands out as a reliable tool for managing emails and communications effectively.

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Is Mozilla Thunderbird ESR gl 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
Scan provider
VirusTotal · Full report

File Integrity

File
140.6.0.exe
SHA256
817e9190006df68b8e19b21db807c9927d2247ed4f97206c46cebe9c27324398
SHA1
c2e2159ce4de83bf93b356a1fe0285d28c6952a8

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Mozilla Thunderbird ESR gl 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