Message Composition

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Toggle Word Wrap Requires Restart

Toggle word wrapping and <PRE> element wrapping in the message composition and HTML display windows, respectively. Based on original version by Kaspar Brand.

Not yet rated
4 users
Added Oct. 8, 2019

FileLink Provider for Box

Uploads your large attachments to your Box instead of sending them by email.

Rated 2 out of 5 stars (1)
503 users
Added May 21, 2019

AutoCopy_rebirth Requires Restart

Lightweight add-on that automatically copies any highlighted text to clipboard.

Rated 4 out of 5 stars (3)
86 users
Added March 8, 2019

Use BCC Instead C Requires Restart

This is a version of 'Use BCC Instead' updated for Thunderbird 64 and above.

It prevents you accidentally sending an email to a large number of recipients without hiding their addresses from each other by using BCC.

Rated 5 out of 5 stars (2)
94 users
Added Feb. 19, 2019

PopMailListRecipients 2

Expands address book lists to recipients addresses in the compose window

Not yet rated
25 users
Added Feb. 8, 2019

FileLink Provider for Dropbox

Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.

Rated 4 out of 5 stars (6)
1,980 users
Added Dec. 17, 2018

BorderColors D Requires Restart

Shows a colorful border around the "New Message" window, so you can tell different identities apart.

Builds on the original BorderColors and the "GT" version, adding different border styles.

Rated 4 out of 5 stars (5)
2,018 users
Added Nov. 17, 2018

Owl for Exchange

Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird

Rated 5 out of 5 stars (18)
18,195 users
Added Oct. 20, 2018

EasyRight2Left Requires Restart

Change direction from Left to Right and Right to Left for Persian, Arabic, Hebrew etc. This Thunderbird extension is based on ComposeRTF available in https://addons.thunderbird.net/en-US/thunderbird/addon/composertf/

Rated 5 out of 5 stars (1)
121 users
Added Aug. 21, 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)
84 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
3 users
Added Nov. 19, 2017

Stop Ignoring Reply:To Requires Restart

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

Rated 5 out of 5 stars (9)
374 users
Added Aug. 24, 2017

Reply to Multiple Messages Requires Restart

Add menu commands for replying to multiple messages at the same time.

Rated 5 out of 5 stars (7)
627 users
Added May 28, 2017

One-by-One Forward Requires Restart

Highlight multiple emails, right-click, then select "One-by-One Forward". This extension will allow you to forward the selected emails, one-by-one, to the recipients you specify using your choice of attachment handling.

Rated 3 out of 5 stars (4)
376 users
Added May 26, 2017

Copy Message ID Requires Restart

Adds a button to the message view toolbar to copy the message ID to the clipboard. This is useful when sending email replies via the command line.

Rated 4 out of 5 stars (1)
110 users
Added April 12, 2017

Edit Message Encoding Fallback Requires Restart

Fallback to a safe encoding, if you are replying to a message with unsupported encoding like UTF-16LE. (workaround for the Bug 961983)

Not yet rated
1 user
Added Dec. 6, 2016

New Thread To All Requires Restart

If you always have the same email recipient lists for your projects, this button may be the right thing for you.

It creates a new mail compose window with to, cc, bcc filled with names from the currently viewed email, but empty body, subject.

Not yet rated
52 users
Added Nov. 2, 2016

Attach from Clipboard Requires Restart

Create file attachments directly from the system clipboard.

Rated 4 out of 5 stars (11)
3,187 users
Added Oct. 17, 2016

Reply As Original Recipient Requires Restart

Reply with the From: field set to the To: field from the original email.

Rated 4 out of 5 stars (7)
332 users
Added Oct. 17, 2016

Reply To All Reminder Requires Restart

Asks for confirmation when "Reply" instead of "Reply to All" is pressed on an email with multiple recipients.

Rated 5 out of 5 stars (2)
326 users
Added Oct. 8, 2016