Message Composition

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Reply To All Reminder Requires Restart

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

Not yet rated
192 users

~okeanos for Filelink Requires Restart

Add ~okeanos support to Thunderbird's Filelink feature.

Not yet rated
47 users

replyTo Requires Restart

Adds a menuitem to the Mail context Menu to Reply to a different Mailadress

Rated 4 out of 5 stars (9)
221 users

MultiLDAP2 Requires Restart

Based on TrustedBird/MiliMail work. Patched to work with lastest Thunderbird.
Permits to use several LDAP directories simultaneously for address autocompletion.

Rated 5 out of 5 stars (1)
335 users

BccBlocker Requires Restart

A ThunderBird extension to prevent the use of the Bcc field.

Bcc is the worst thing ever.
It kills transparency inside an organization.
If you use the Bcc feature, you should ask yourself why..

Not yet rated
4 users

Reply As Original Recipient Requires Restart

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

Rated 5 out of 5 stars (3)
178 users

Lovebird Requires Restart

Email organized around the people you care about.

Rated 3 out of 5 stars (3)
27 users

MALA Hindi Spell Checker by MCRPV, (Anurag Seetha) Requires Restart

MALA (Makhanlal) Hindi Shabd Shodhak to check Spelling of Hindi Unicode Text by Makhanlal Chaturvedi National University of Journalism & Communication, Bhopal, India. Chief Developer - Dr. Anurag Seetha. The program is Released Under the GNU GPL V 3

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4 users

Resubmit Requires Restart

(Re)submit multiple messages to a predefined recipient(s)

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45 users

Check Attachment before Send Requires Restart

Confirms to send a mail with any attachment.

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53 users

Attach from Clipboard Requires Restart

Create file attachments directly from the system clipboard.

Rated 4 out of 5 stars (3)
977 users

Single Domain Requires Restart

Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.

Rated 5 out of 5 stars (1)
224 users

RM: EXTERNAL: Requires Restart

Removes 'EXTERNAL: ' from the start of an email subject if it is preceded by 'RE:' or 'FWD:' (case insensitive). The removal is done after the 'Send' button is pressed.

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2 users

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
21 users

mms Auto Correct Requires Restart

AutoCorrect for the Compose window.

Rated 3 out of 5 stars (34)
685 users

Attachemnt Encoding Detector Requires Restart

To detect file encoding of attachments, this forces to Thunderbird to use an encoding detector for a specific locale instead of the generic one.

Not yet rated
522 users

Sensitivity Header + SPX Requires Restart

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
Forked from another add-on developed by ff_bob, added SPX header for Sophos security appliances

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10 users

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.

Not yet rated
40 users

Insert Link from Local File Requires Restart

Inserts links from local files via drag and drop on the composition window.

Rated 3 out of 5 stars (3)
348 users

Colored Recipient Type Requires Restart

Customize background-color of the recipient address fields for each recipient types of To:, Cc:, Bcc:.Customize background-color of the recipient address fields for each recipient types of To:, Cc:, Bcc:.

Rated 4 out of 5 stars (3)
503 users