Send Later Requires Restart
True "Send Later" functionality to schedule the time for sending an email.
ThunderPEC Requires Restart
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.
ReplyWithHeader Requires Restart
Outlook style headers and few goodies for Thunderbird & Postbox.
Check and Send Requires Restart
Check the message contents and addresses before you send the message...
Emoji Requires Restart
Add emojis to your e-mails.
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.
Copy Message ID Requires Restart
Adds a button to the message view toolbar to copy the message ID to the clipboard. This is useful when sending email replies via the command line.
Remembers the language you use with a person or group of people, and switches the spellchecker language automatically for you next time. You do not have to do it manually any more. It remembers and switches it for you.
DL for Thunderbird Requires Restart
Allows to convert large attachments to links automatically without 3rd party providers.
Flex Confirm Mail Requires Restart
Confirm mail address and attachments based on flexible rules.
Grammar Checker Requires Restart
Checks grammar using LanguageTool.
Nextcloud for Filelink Requires Restart
"Nextcloud for Filelink" is an Open Source Thunderbird extension which makes it easy to send large attachments with Thunderbird by uploading them first to a Nextcloud server and by then inserting the link into the body of your email.
SendToSecondEmail Requires Restart
This Extension lets you send Mails to both, first and second email address...
Emoji Menu Requires Restart
Adds the ability to easily insert emojis into your composed messages in Thunderbird.
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.
X-Unsent support Requires Restart
Adds support for the X-Unsent header.
Edit Message Encoding Fallback Requires Restart
Fallback to a safe encoding, if you are replying to a message with unsupported encoding like UTF-16LE. (workaround for the Bug 961983)
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.
Clippings Requires Restart
Save frequently-entered text for pasting later.
Consigna para Filelink Requires Restart
Plugin para subir ficheros a Consigna (Junta de Andalucía) de forma automática desde Thunderbird.
Está ideado para el intercambio de ficheros de gran tamaño. Es un espacio de almacenamiento temporal y con algunas restricciones de acceso opcionales.