Add-ons
Recently Updated Extensions
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thundervim
Vim keybindings for editing email in the Thunderbird compose window.
Compose Recipient Analyzer
Analyzes To and Cc recipients in the Thunderbird compose window.
JayBeeMailManager
Organize Thunderbird mail with flexible rules, previews, schedules, logs and undoable automation.
Email Original
Validates Email Original seals in received messages and adds a seal when sending from registered accounts, helping detect impersonation and tampered email.
Tether Mail Extension
Automatically detects one-time passcodes (OTP / 2FA verification codes) in
incoming email to be autofilled into webpages by the Tether Browser Extension.
InboxPie
Visualize and Cleanup your inbox with interactive sunburst charts. Analyze emails by sender, domain, size, and timeline. Bulk select, review, and clean up — move to Trash or any folder. Privacy-first: all processing stays local on your device.
ENIGMA Axiom — Mail Assistant
Drafts your replies in the Thunderbird compose window, using the conversation, your notes and your own goals. Sorts what arrived by what needs answering. Nothing is sent unless you send it — or until you switch on automatic replies yourself.
SoloSend
From the compose window, send your email to many recipients one at a time, with a delay between each — or schedule it for later.
CalmSignal
Compose-time wellness nudges for Thunderbird. On-device heuristics while you write — rules can update quietly in the background. Optional account linking for dashboard sync. Your email body stays private.
PostScriptum
Files your sent message and the replied-to or forwarded message right after sending — across accounts and servers, into folders of your choice, with tags. Everything that belongs together in one place.
Duplicate Email Remover
Finds and removes duplicate emails across your Thunderbird folders using the Message-ID header for reliable matching, with a subject/sender/date/size fallback for the rare message that lacks one. Allows individual folder scan inclusion/exclusion.
WarnAttachment
WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.
Tab Composer
Alternative tab composer for Thunderbird with rich editor, address book and direct sending.
Magic Clipper for Gemini Notebook
Import emails, attachments and links directly into Google Gemini Notebook (ex-NotebookLM) in one click from the Thunderbird message pane. Optimized for Gemini analysis.
Quicktext
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
WashiBird
A cozy, paper-like theme (Light/Dark). Built as an extension to allow deeper UI customization than standard themes support.
Rspamd-spamness
Calendar Annual View
Annual calendar year view in a grid layout.
Displays all 12 months with rows as months and columns as weekdays. Supports multiple calendars with automatic detection and color matching.
Read-only.
Filtering by event duration and "full day event"
To create your own collections, you must have a Mozilla Add-ons account.
