Message Composition

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Tategaki

Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
20 weekly downloads

Colored Recipient Type

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:.

Not yet rated
18 weekly downloads

Insert Link from Local File

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

Rated 3 out of 5 stars (3)
16 weekly downloads

Attachemnt Encoding Detector

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
15 weekly downloads

mms Auto Correct

AutoCorrect for the Compose window.

Rated 3 out of 5 stars (32)
15 weekly downloads

Macro Template No Restart

Macro Template is to replace mail templates with macros for date formatting.

Rated 5 out of 5 stars (1)
13 weekly downloads

Identity Checker

This add-on checks to sender identity when send a message.

Not yet rated
12 weekly downloads

Send and Archive

Adds a button to send an email and archive the original message.

Rated 5 out of 5 stars (8)
11 weekly downloads

Get before Send

Get messages for the account which is bound to the identity then send the message when you click the toolbar button or the menu item. If your SMTP sever authenticates using POP(IMAP) before SMTP, the extension is useful.

Rated 5 out of 5 stars (2)
11 weekly downloads

X-Unsent support

Adds support for the X-Unsent header.

Rated 3 out of 5 stars (2)
9 weekly downloads

Ethical signature

Add a button to the email composition toolbar, which lets you insert an ethical signature.

Not yet rated
9 weekly downloads

Sensitivity Header

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.

Rated 4 out of 5 stars (1)
8 weekly downloads

PennyPost

This extension makes it very easy to generate and attach stamps to outgoing mail. It also automatically detects and verifies stamps on incoming emails. The MBound algorithm requires a 16MB fixed table to work, HashCash is more CPU intense.

Rated 5 out of 5 stars (3)
8 weekly downloads

RemindIt No Restart

Help in reminding mails to be answer or sent again. Choose a reminder date for each received or send message that are highlighted in the message list, depending on their status (expired, soon to exprire, to be reminded). Sending a reminder is eased.

Rated 3 out of 5 stars (16)
7 weekly downloads

random(signature)

Updates a given signature file in regular intervals.

Rated 4 out of 5 stars (56)
7 weekly downloads

IMAP Draft Unread

This is a Thunderbird addon that lets you customize the behavior of the IMAP draft unread messages. No more new mail notifications for your drafts!!

Rated 3 out of 5 stars (1)
6 weekly downloads

replyTo

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

Rated 5 out of 5 stars (7)
5 weekly downloads

Lovebird

Email organized around the people you care about.

Rated 3 out of 5 stars (3)
5 weekly downloads

ThunderBird Ticker

Extension for creating support tickets based on mail.

Not yet rated
4 weekly downloads

~okeanos for Filelink

Add ~okeanos support to Thunderbird's Filelink feature.

Not yet rated
4 weekly downloads