Search

Mail Merge

Create and Save or Send Multiple Individual and Personalized Messages from a Draft

Rated 5 out of 5 stars (230)
71,173 users

Download Now

LookOut (fix version)

LookOut decodes winmail.dat (TNEF encoded) files that may come from a misconfigured Microsoft Exchange server or Outlook user allowing access to the original attachments
Support: Thunderbird

Rated 4 out of 5 stars (96)
176,103 users

Download Now

DKIM Verifier Featured

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (48)
21,094 users

Download Now

German dictionary (de_DE)

German dictionary igerman98 (de_DE, Germany), for Firefox, Thunderbird und Seamonkey.

Rated 4 out of 5 stars (24)
41,804 users

Download Now

Dizionario italiano

Add support for Italian to spellchecking

Rated 4 out of 5 stars (71)
81,243 users

Download Now

Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (265)
106,210 users

Download Now

Quicktext

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

Rated 4 out of 5 stars (470)
129,318 users

Download Now

LookOut Requires Restart

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

Rated 4 out of 5 stars (158)
1,117 users

Download Now

English (en-GB) Language Pack

English (en-GB) Language Pack

Rated 2 out of 5 stars (33)
141,550 users

Download Now

Password Exporter

This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.

Rated 4 out of 5 stars (551)
85 users

Download Now

Remove Duplicate Messages

Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).

Rated 4 out of 5 stars (300)
97,454 users

Download Now

Polish Spellchecker Dictionary

Polish spell-check dictionary for Firefox, Thunderbird and SeaMonkey.

Rated 5 out of 5 stars (50)
49,992 users

Download Now

MinimizeToTray revived Requires Restart

Minimizes windows into the system tray.

Rated 4 out of 5 stars (395)
1,077 users

Download for Linux Download for Windows

Element Hiding Helper for Adblock Plus

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

Rated 5 out of 5 stars (473)
276 users

Download Now

Woordenboek Nederlands

Dutch dictionary with wordslist from OpenTaal.

Rated 3 out of 5 stars (70)
24,477 users

Download Now

TbSync

TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.

Rated 5 out of 5 stars (262)
69,227 users

Download Now

Russian spellchecking dictionary

Russian spellchecking dictionary

Rated 4 out of 5 stars (136)
15,390 users

Download Now

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (204)
51 users

Download Now

Verificador Ortográfico para Português do Brasil

Possui a maioria das palavras existentes em português do Brasil, de acordo com o novo acordo ortográfico que entrou em vigor janeiro de 2009. É Atualizado constantemente.

Precisa de ajuda?
facebook.com/RescueLanguage
rescuelanguage.sf.net

Rated 5 out of 5 stars (76)
6,306 users

Download Now

Mail Redirect Requires Restart

Allow to redirect (a.k.a. "remail") mail messages to other recipients.

Rated 4 out of 5 stars (144)
2,576 users

Download Now