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Proton Drive Toolbar Button

Adds a Proton Drive button to the toolbar.

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85 users

Połączony słownik polskiej i angielskiej pisowni

Dwujęzyczny słownik sprawdzania polskiej i angielskiej (GB) pisowni. Przeznaczony dla użytkowników, którzy regularnie piszą w obydwóch językach.

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1,358 users

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.

Rated 5 out of 5 stars (2)
69 users

FolderSync

Synchronize folders between two email accounts

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20 users

AI Grammar

Helps you write emails with the Llama3 LLM (offline). Corrects grammar mistakes in your draft email.

Rated 5 out of 5 stars (1)
442 users

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.

Rated 5 out of 5 stars (1)
83 users

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.

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13 users

Spam & Trash Cleaner

Quickly empty the Spam and Trash folders of all your accounts with one click.

Rated 5 out of 5 stars (1)
79 users

CalendarSearchExport

Exports the results of a search in calendars

Rated 5 out of 5 stars (8)
589 users

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.

Rated 5 out of 5 stars (2)
160 users

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

Rated 5 out of 5 stars (5)
196 users

ThunderJira

A Thunderbird addon that integrates Jira directly into the email client. Supports Jira Cloud (atlassian.net) and Jira Server / Data Center (self-hosted).

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1 user

Message Links 4 events

Allows to use links to messages in the description field of events and task

Rated 4 out of 5 stars (1)
119 users

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.

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1 user

KIM Attachment Search

Sucht in KIM-Anhängen (XML/PDF/DOCX) und zeigt Meta-Daten

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1 user

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.

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5 users

Retyc

Encrypt and upload large files with to Retyc. Recipients with a Retyc account get E2E encryption; others access files using a passphrase.

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2 users

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.

Rated 4 out of 5 stars (5)
1,235 users