Add-ons
Message Composition
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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.
Smart Quotes
Requires Restart
Enables “Smart” Quotes for Thunderbird Email
EnForward
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.
hubiC for Filelink
Requires Restart
Add hubiC support to Thunderbird's Filelink feature.
Lovebird
Requires Restart
Email organized around the people you care about.
~okeanos for Filelink
Requires Restart
Add ~okeanos support to Thunderbird's Filelink feature.
Patch to Alert Invalid Addresses
Requires Restart
Shows alert if there is any invalid address in sending message.
Don't Send Linked Files
Requires Restart
Prevents sending of linked files if they are file: URLs.
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.
Markdown Here
Requires Restart
Write your email in Markdown, then make it pretty.
Custom Address Sidebar
Requires Restart
Allow you to help address sidebar more useful.
FastCC
Requires Restart
A Thunderbird extension that let you switch to cc: with the ALT+CTRL+C keyboard shortcut!
SmartTemplates
Featured
SmartTemplates offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.
RemindIt
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.
Flexible Identity
Requires Restart
Selects an identity based on the recipients list when sending an email
ThunderPEC
Requires Restart
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.
Send Later
True "Send Later" functionality to schedule the time for sending an email.
Auto Resize Image
Requires Restart
Resizer for inline and attachment images (JPEG, PNG, BMP and GIF image formats).
All platforms are supported (Windows, Linux and Macintosh).
To create your own collections, you must have a Mozilla Add-ons account.
