# Mozilla Thunderbird 160 released with IMAP deletion fixes and filter UI improvements

> **Key takeaway:** Thunderbird 160 resolves IMAP email deletion and Exchange compatibility issues while adding bulk filter selection in the Message Filters dialog.

**Published:** 2026-11-10T18:42:35+00:00 
**Source:** 9to5Linux 
**Category:** distro-news 
**Canonical URL:** https://fosswire.org/news/mozilla-thunderbird-160-released-with-imap-deletion-fixes-an.html 

## Summary
Mozilla Thunderbird 160, the open-source email and calendaring client, is now available with targeted fixes for long-standing mail protocol problems and a minor but requested interface improvement. The release specifically addresses IMAP email deletion bugs and Exchange server compatibility issues that had affected users relying on these protocols for message management. Additionally, the Message Filters dialog now supports selecting all filters at once, streamlining bulk operations for users with extensive filter rules.

Thunderbird 160 continues the application's transition through its post-Mozilla organizational restructuring, delivering maintenance updates to a user base that spans Linux, macOS, and Windows. The release is available as a direct download and will propagate through distribution repositories on rolling and fixed-release Linux distributions over the coming days.

## What changes in Thunderbird 160
- **IMAP deletion fix:** Resolves bugs affecting email deletion operations over IMAP, which could leave messages incompletely removed or cause synchronization errors between server and local copies.
- **Exchange compatibility:** Addresses interoperability issues with Microsoft Exchange servers, improving reliability for users in enterprise and institutional environments dependent on Exchange-based email.
- **Message Filters UI:** Adds support for selecting all filters simultaneously in the Message Filters dialog, enabling bulk enable/disable/delete operations rather than individual filter management.
- **Release scope:** Version 160 is characterized as an incremental maintenance release rather than a feature-major milestone, focusing on protocol stability and user interface polish.

## Why it matters
For Linux desktop users and organizations standardizing on open-source productivity tools, Thunderbird 160's IMAP and Exchange fixes reduce friction in mixed-environment email workflows where proprietary clients often dominate. The continued cadence of Thunderbird releases, now under independent stewardship from the Mozilla Corporation era, demonstrates sustainable maintenance of a critical FOSS communication tool that remains the default email client on many Linux distributions.