thunderbird@esr ☆

« Back to VersTracker

Description:
Customizable email client

Type: Cask | Latest Version: 140.7.2esr@0 | Tracked Since: Dec 28, 2025

Links: Homepage | @Mozilla | formulae.brew.sh

Category: Productivity

Tags: email esr thunderbird client imap privacy

Install: brew install --cask thunderbird@esr

About:
Mozilla Thunderbird ESR is an extended support release of the popular open-source email client, designed for stability and long-term reliability. It provides a full-featured email experience with robust spam filtering, advanced security, and extensive customization options through add-ons. This version is ideal for organizations and users who prioritize a stable, predictable email environment over frequent feature updates.

Key Features:

Extended Support Release (ESR) for maximum stability
Powerful built-in spam and junk mail filtering
Support for multiple email accounts and protocols (IMAP, SMTP, POP3)
Integrated calendar and task management (via Lightning add-on)
Robust privacy and security features, including phishing protection

Use Cases:

Managing multiple email accounts from a single unified interface
Corporate or organizational environments requiring a stable email client
Users needing advanced customization through a rich ecosystem of add-ons

Alternatives:

Apple Mail – Native macOS client, more tightly integrated but less customizable
Microsoft Outlook – Commercial suite with deep integration into Microsoft 365 ecosystem
Spark – Modern, freemium client focused on smart inbox and team collaboration

Version History

Detected	Version	Change	Commit
Feb 16, 2026 5:11pm	140.7.2esr	VERSION_BUMP	22435262
Jan 27, 2026 7:56pm	140.7.1esr	VERSION_BUMP	0814dc3e
Jan 13, 2026 11:01pm	140.7.0esr	VERSION_BUMP	69614663
Sep 17, 2025 2:38pm	140.3.0esr	VERSION_BUMP	e1adbda3
Sep 16, 2025 2:57pm	140.2.1esr	VERSION_BUMP	5923f57a
Sep 15, 2025 1:06pm	128.14.0esr	VERSION_BUMP	c459aa6c
Aug 19, 2025 10:47pm	128.14.0esr	VERSION_BUMP	6418de8c