Latest Thunderbird version: 155.0
The current verified stable version of Thunderbird is 155.0.
Stable release
155.0Release date: 2026-09-01. Source verified: 2026-09-07. Source: Thunderbird official release download.
Mozilla's open-source desktop email, calendar, contacts, feeds, and newsgroup application.
Open the official Thunderbird downloadSource-backed version details
Catalog source
Thunderbird official release download
Verification status
Source verified: 2026-09-07.
Release date
Release date: 2026-09-01.
Category
Communication
Ownership
Vendor-provided source
Evidence
Publisher source record
Recently checked — Checked today; the catalog review window is 45 days.
Where can you install it?
What-Version labels who publishes or maintains each route. Community routes are useful, but they are not presented as vendor downloads.
Vendor-providedThunderbird official release download
Version evidence and catalogued download links are anchored to the publisher-owned source.
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