Add-ons
Message Composition
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Signature Switch
Switch the signature on/off or choose a new one from your predefined set.
66,723 users -
Send Later
True "Send Later" functionality to schedule the time for sending an email.
81,338 users -
Send Later Button
A simple button to invoke the (already existing) send later functions.
9,810 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.81,338 users -
Switch the signature on/off or choose a new one from your predefined set.66,723 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft66,087 users -
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird27,684 users -
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!25,836 users -
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.23,980 users
Top Rated See all »
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Default "Reply" functionality pays attention to "Reply-To" in original email324 users -
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.7,559 users -
True "Send Later" functionality to schedule the time for sending an email.81,338 users
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ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.23,980 users
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Category manager for Thunderbird contacts, also allows to send an email to all members of a category (categories can be used as contact groups).5,721 users
Recently Added See all »
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Toggle word wrapping and <PRE> element wrapping in the message composition and HTML display windows, respectively. Based on original version by Kaspar Brand.157 users
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It's an extension that changes the format of reply mails.47 users -
Uploads your large attachments to your Box instead of sending them by email.1,253 users -
Select sender mail address based on the recipient and reply with the same address11 users
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Lightweight add-on that automatically copies any highlighted text to clipboard.79 users
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This is a version of 'Use BCC Instead' updated for Thunderbird 64 and above.
It prevents you accidentally sending an email to a large number of recipients without hiding their addresses from each other by using BCC.246 users
See all 115 extensions in Message Composition »
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