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Dysclusif

Simplifier la lecture de mails en supprimant l'écriture inclusive

Rated 5 out of 5 stars (1)
13 users
Updated Feb. 6, 2026

Rspamd-spamness

Rspamd spam filtering system score visualization.

Rated 4 out of 5 stars (8)
1,034 users
Updated Jan. 30, 2026

Attachment Batch Extract

Extract attachments from selected Thunderbird messages, either as separate files or as a single ZIP archive, with a configurable destination folder.

Rated 4 out of 5 stars (1)
5 users
Updated Jan. 30, 2026

Failed Recipient Extractor [Bounce Mail]

Extracts unique recipient addresses from selected non-delivery reports and failed delivery notifications.

Not yet rated
9 users
Updated Jan. 29, 2026

Email Reminders

Set reminders for emails with Outlook-style notificationsSet Outlook-style reminders on emails with notifications

Not yet rated
31 users
Updated Jan. 28, 2026

Antispam

Sending email to the Antispam database

Not yet rated
35 users
Updated Jan. 28, 2026

ThunderAI (ChatGPT, Gemini, Claude, Ollama)

ThunderAI uses the capabilities of ChatGPT, Google Gemini, Claude or Ollama to enhance email management.
It enables users to analyze, write, correct, assign tags, create calendar events and tasks and optimize their emails.

Rated 5 out of 5 stars (24)
10,332 users
Updated Jan. 27, 2026

ReFwdFormatter

Remove the ">" prefix from quote when you make a reply.

[Source code] https://github.com/isshiki/ReFwdFormatter

Rated 4 out of 5 stars (15)
2,464 users
Updated Jan. 22, 2026

Header Tools Lite

Allows to modify the header and the source of messages

Rated 4 out of 5 stars (52)
2,638 users
Updated Jan. 21, 2026

ExQuilla for Exchange

Thunderbird email accounts connecting to Microsoft Exchange Web Services.

Rated 4 out of 5 stars (134)
3,878 users
Updated Jan. 20, 2026

Owl for Exchange

Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).

Rated 5 out of 5 stars (231)
50,421 users
Updated Jan. 20, 2026

OpenDat

Easily open and decode winmail.dat attachments directly in Thunderbird. OpenDat unpacks TNEF files sent from Microsoft Outlook and allows you to save the original attachments inside. Fast, private, and runs entirely on your device.

Rated 3 out of 5 stars (2)
187 users
Updated Jan. 19, 2026

Unwrap Signature

Unwraps a signed message from signature syntax (multipart/signed -> multipart/mixed), allowing Thunderbird to detach or delete attachments.

Not yet rated
3 users
Updated Jan. 19, 2026

CollectAddresses

Collect all sender/recipient/... addresses and store in an addressbook

Rated 5 out of 5 stars (7)
1,988 users
Updated Jan. 19, 2026

Signal Spam

Add simple functions to report spams or phishing to Signal Spam by one click.
The add-on will also alert you if you open a fraudulent e-mail (phishing).

Rated 2 out of 5 stars (192)
16,720 users
Updated Jan. 16, 2026

AI Chatting Mail Summarizer

Summarize your emails with AI, then know what should i do.

Not yet rated
5 users
Updated Jan. 14, 2026

Thunderbird Translate

Thunderbird Translate adds a one-click translation banner to messages in Thunderbird. Translate an email's body (html or plain text) using the Gemini API and show the translated result at the top of the message.

Rated 1 out of 5 stars (1)
751 users
Updated Jan. 14, 2026

Sender Notes

Add notes to email senders that appear as banners when you open their emails. Remember important context like "important client", "complaint history", or "slow payer". All data stays local—no external servers.

Not yet rated
8 users
Updated Jan. 14, 2026

Expression (Power) Message/Calendar Search - NG

* Mail / calendar search
* Fuzzy search: Bucher also finds Bücher
* Visual search query builder
* Search window as a tab
* New search and filter criteria: reply-to, bcc, to-only, filename, xnote, date range, time, etc
* to A but not to B + more

Rated 4 out of 5 stars (52)
3,195 users
Updated Jan. 14, 2026

Create Calendar events from mail content

This plugin offers to create new events based on the email subject and content

Rated 3 out of 5 stars (2)
150 users
Updated Jan. 14, 2026