Flex Confirm Mail Requires Restart
Confirm mail address and attachments based on flexible rules.
Check and Send Requires Restart
Check the message contents and addresses before you send the message...
Custom Address Sidebar Requires Restart
Allow you to help address sidebar more useful.
MEGAbird Requires Restart
Add MEGA support to Thunderbird's Filelink feature.
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.
SmartTemplate4 Requires Restart
SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.
Attach from Clipboard Requires Restart
Create file attachments directly from the system clipboard.
ReplyWithHeader Requires Restart
Outlook style headers and few goodies for Thunderbird & Postbox.
ThunderPEC Requires Restart
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.
ThunderHTMLedit Requires Restart
Thunderbird HTML editor. This add-on adds a HTML tab to the composition window where you can see and edit the HTML source of the message.
Send Later Requires Restart
True "Send Later" functionality to schedule the time for sending an email.
Color Text Compose Buttons Requires Restart
Adds Text Color Buttons in Compose Toolbar and More: Pixel FontSize, Strikethough, Sub & Superscript, Lower & UpperCase. Also provide Tools: Insert iframe, Launch MathType, Maths & Greek Symbols, Load Template Variables and Duplicate Compose Window.
Signature Switch Requires Restart
Switch the signature on/off or choose a new one from your predefined set...
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.
Send and Archive Requires Restart
Adds a button to send an email and archive the original message.
Inbox Cleaner of expired Emails Requires Restart
Moves expired Emails out of your Inbox!
Reply To All Reminder Requires Restart
Asks for confirmation when "Reply" instead of "Reply to All" is pressed on an email with multiple recipients.
~okeanos for Filelink Requires Restart
Add ~okeanos support to Thunderbird's Filelink feature.
replyTo Requires Restart
Adds a menuitem to the Mail context Menu to Reply to a different Mailadress
MultiLDAP2 Requires Restart
Based on TrustedBird/MiliMail work. Patched to work with lastest Thunderbird.
Permits to use several LDAP directories simultaneously for address autocompletion.