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Proton Drive Toolbar Button
Połączony słownik polskiej i angielskiej pisowni
Dwujęzyczny słownik sprawdzania polskiej i angielskiej (GB) pisowni. Przeznaczony dla użytkowników, którzy regularnie piszą w obydwóch językach.
Mail Auth Info Viewer
Visualize email authentication (SPF, DKIM, DMARC), sender identity, delivery routes, and phishing link analysis with a four-tier severity model. Local-only processing. Fights display name spoofing and phishing.
AI Grammar
Helps you write emails with the Llama3 LLM (offline). Corrects grammar mistakes in your draft email.
SCMenu
Supplementary compose menus to reply to a message by including its original attachments and to create a new email to the recipients of an existing message.
Glossy New Tab - Say Goodbye to Boring Tabs
Your Boring New Tab Is Dead - Meet Glossy New Tab. It allows you to apply live wallpapers in your new tab.
Spam & Trash Cleaner
Quickly empty the Spam and Trash folders of all your accounts with one click.
CalendarSearchExport
Reply All Button
Add a "Reply All" button which never behaves like "Reply List". Intended to replace the Smart Reply button to avoid accidentally performing Reply List behavior.
Folder Pane Toggler
Adds a toggle button to the unified toolbar to show and hide the folder pane. This is very useful when using different tabs with different folders open, and on smaller screens, or where as much space is needed as possible. This should be part of TB
ThunderJira
A Thunderbird addon that integrates Jira directly into the email client. Supports Jira Cloud (atlassian.net) and Jira Server / Data Center (self-hosted).
Message Links 4 events
Allows to use links to messages in the description field of events and task
ParaShare FileLink
Send files directly from Thunderbird using PARAMANT — post-quantum encrypted, burn-on-read. Files are destroyed after first download. Requires a free PARAMANT API key.
KIM Attachment Search
mleak - mail metadata osint
mleak is a Thunderbird extension for per-mail osint header and body analysis. MUA fingerprints, server stack, M365 tenant data,relay path, auth verdicts and integrity signals.
100 % offline. No network access, no telemetry, no external dependencies.
Retyc
Encrypt and upload large files with to Retyc. Recipients with a Retyc account get E2E encryption; others access files using a passphrase.
Inline Image Resizer
This AddOn allows you to quickly resize images (like screenshots) you embed in a new mail to small, medium or large size with just a click in the composer window. This reduces e-mail size. The AddOn also estimates the size of your mail.
To create your own collections, you must have a Mozilla Add-ons account.
