Highlighter Requires Restart
Quickly highlight some text in Thunderbird message composing windows.
Check and Send Requires Restart
Check the message contents and addresses before you send the message...
MEGAbird Requires Restart
Add MEGA support to Thunderbird's Filelink feature.
DL for Thunderbird Requires Restart
Allows to convert large attachments to links automatically without 3rd party providers.
Flexible Identity Requires Restart
Selects an identity based on the recipients list when sending an email
Emoji Menu Requires Restart
Adds the ability to easily insert emojis into your composed messages in Thunderbird.
Posting Style Enforcer Requires Restart
Automatically converts top-posted messages to use bottom-positng or vice versa. Interleaved posts are left alone. Detects automatically added text and supports a per-contact list of exceptions.
hubiC for Filelink Requires Restart
Add hubiC support to Thunderbird's Filelink feature.
Get before Send Requires Restart
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.
Reply As Original Recipient Requires Restart
Reply with the From: field set to the To: field from the original email.
PennyPost Requires Restart
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.
Toggle Word Wrap Requires Restart
Toggle word wrapping and PRE element wrapping in the message composition and HTML display windows, respectively.
Attach from Clipboard Requires Restart
Create file attachments directly from the system clipboard.
MultiLDAP2 Requires Restart
Based on TrustedBird/MiliMail work. Patched to work with lastest Thunderbird.
Permits to use several LDAP directories simultaneously for address autocompletion.
random(signature) Requires Restart
Updates a given signature file in regular intervals.
EnForward Requires Restart
Save your email into Evernote by forwarding it to Evernote email address.
Before you use it, you need to specify your Evernote email address (see the screenshot).
This function can be invoked by "Forward to Evernote" in the context menu.
BorderColors GT Requires Restart
How many time you sent an email from your wrong email address?
This add-ons allows you assign a different color to the compose window border for each of your email addresses. So you can immediately view from what account are you writing.
SubSwitch Requires Restart
Simplify email categorization - it will be easier for you and others to manage mail. Define the set of prefixes for all emails you send or let SubSwitch to autodiscover it. While writing insert prefix to the title - choose one from your set.
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.