Icon of program: Mozilla Thunderbird ESR i…

Download Mozilla Thunderbird ESR is for PC

  • Free
  • 4.9
    1
  • 2
  • V140.3.1

Mozilla Thunderbird ESR is free download. Always available from the Softonic serversMozilla Thunderbird ESR is free download. Always available from trusted servers.

  • Free & fast downloadFree & fast downloader ()
  • Always available
  • Tested virus-free
Free Download for PC

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Alternative Mozilla Thunderbird ESR is download from external server (availability not guaranteed)
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The Safe Downloader downloads the app quickly and securely via Softonic´s high-speed server, so that a trustworthy origin is ensured. In addition to virus scans, our editors manually check each download for you.

Advantages of the Safe Downloader:

  • Malware protection informs you if your download has installed additional unwanted software.
  • Discover additional software: Test new software that are waiting to be discovered in the downloader.
  • With us you have the choice to accept or skip additional software installs.

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100/100

Score result: Clean

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

  • Virus free
  • Spyware free
  • Malware free
  • Verified by Security Partners

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Scan Info

Last scan
Saturday, October 18, 2025
Scan provider
VirusTotal · Full report

File Integrity

File
140.3.1.exe
SHA256
a407f9936aec2c298b490f25c4497d2ae91cd9075bb74cd5ed9ffc17d459d590
SHA1
a0fe26e2d8027caa049dd18030ef8e50863ae043

Softonic security commitment

Mozilla Thunderbird ESR is 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.