Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) in Thunderbird.
Add hubiC support to Thunderbird's Filelink feature.
Category manager for CardDav contacts, also allows to send an email to all members of a category (categories can be used as contact groups).
Allows to convert large attachments to links automatically without 3rd party providers.
Check the message contents and addresses before you send the message...
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.
Mail Merge Featured
Mass Mail and Personal Mail
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.
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.
True "Send Later" functionality to schedule the time for sending an email.
Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!
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.
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.
Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more
Automatic Dictionary No Restart
Extension that remembers the language of the spellchecker used when composing and switches to it every time you write to that person.
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.
Selects an identity based on the recipients list when sending an email
Confirm mail address and attachments based on flexible rules.
Write your email in Markdown, then make it pretty.