Newest Extensions


Send to Internals Requires Restart

Provides a special button to send mail to internals. "Internals" may be company, organization, or user group and so on.

Not yet rated
1 user
Added March 5, 2018

Duplicate Contacts Manager Requires Restart

This add-on searches the given address book(s) for matching contact entries.
It can automatically delete entries that have equivalent or less information than some other one.
Any remaining matches are presented to the user for manual treatment.

Not yet rated
34 users
Added Feb. 24, 2018

Send to Things for Thunderbird Requires Restart

Create a new Things task from the current email you are viewing. Opens the quick add dialog with subject and message content pre-filled.

I've created this add-on as a user of Things, it is not created or endorsed by Cultured Code.

Not yet rated
16 users
Added Feb. 12, 2018

Force Hide Message Pane Requires Restart

Force hide message pane at startup.

Not yet rated
10 users
Added Jan. 18, 2018

Switch Link External Handler Requires Restart

Provides abilities to switch external handlers to open links.

Not yet rated
5 users
Added Jan. 18, 2018

No Delete Requires Restart

Prevents to delete messages from your disk. Note that it's OK to move mail into trash folder itself.

Not yet rated
7 users
Added Jan. 18, 2018

tb_email_grabber Requires Restart

Very basic extension that exports all sender of mails in one folder into a CSV, which includes their fullname and email. The extension adds an option to the folder view context menu. Please select the folder to export before starting the export.

Rated 4 out of 5 stars (2)
347 users
Added Jan. 1, 2018

Asciidoctor for Thunderbird Requires Restart

Type some text in your mail's body, hit the asciidoctor button and transform your mail into a pretty html5 asciidoctor document. Font awesome and code highlighting are enabled.

Rated 5 out of 5 stars (1)
27 users
Added Dec. 23, 2017

Copiar Assunto Requires Restart

Adiciona um botão para copiar o Assunto do email selecionado para a área de transferência

Add a button to copy the Subject line of the selected email to the clipboard

Not yet rated
30 users
Added Nov. 19, 2017

Theme Font & Size Changer for ThunderBird

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 4 out of 5 stars (42)
13,831 users
Added Nov. 14, 2017

Jalali Date Format Requires Restart

Convert Date/Received column to Jalali (Persian Date).

* Adds a column in the mail view for displaying Iranian dates for each email.
* Supports both English and Persian Iranian Date.

more info contact

Rated 5 out of 5 stars (1)
9 users
Added Oct. 24, 2017

Classic Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Rated 4 out of 5 stars (3)
641 users
Added Oct. 23, 2017

GmailOutOfOffice Requires Restart

Out of Office for Gmail

This add-on allows you to set an out of office auto-responder in your gmail account. It adds a button in the toolbar customization list.

Rated 4 out of 5 stars (1)
237 users
Added Oct. 9, 2017

Remote Content By Folder

Decide whether to allow or block remote content in messages by comparing the names of the folders in which they are located to configured regular expressions.

Rated 5 out of 5 stars (1)
32 users
Added Sept. 9, 2017

ansitel Click-to-Dial MT Requires Restart

Dieses Plugin ermöglicht das Wählen von markierten Rufnummern im Mozilla Thunderbird mit ansitel VoIP-Telefonanlagen. Einfach Rufnummer markieren und per Rechtsklick mit der Maus loswählen.

Not yet rated
23 users
Added Sept. 8, 2017

Stop Ignoring Reply:To Requires Restart

Default "Reply" functionality pays attention to "Reply-To" in original email

Rated 5 out of 5 stars (7)
150 users
Added Aug. 24, 2017

ToggleReplied Requires Restart

Enables toggling of replied, forwarded, and redirected states of messages.

Rated 4 out of 5 stars (2)
106 users
Added Aug. 17, 2017

Rescue Conflicting Alternatives Requires Restart

Converts a mail with conflicting alternative bodes to regular multipart mail.

Not yet rated
22 users
Added July 11, 2017

attachment column in search result list Requires Restart

Show the column for attachments in search results list. General search (edit-> search -> search emails) does not show by default if a message has attachments.
This addon adds this column, just as in a normal folder view.

Not yet rated
366 users
Added June 14, 2017

Message Title Header

Show a title header above messages.

Rated 1 out of 5 stars (1)
123 users
Added June 10, 2017