Add-ons
Message Composition
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Mail Merge
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
63,159 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.72,589 users -
Switch the signature on/off or choose a new one from your predefined set.64,416 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft63,159 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!29,122 users -
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.24,837 users -
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.17,927 users
Top Rated See all »
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Default "Reply" functionality pays attention to "Reply-To" in original email407 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.4,993 users -
Add menu commands for replying to multiple messages at the same time.591 users -
True "Send Later" functionality to schedule the time for sending an email.72,589 users
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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.17,927 users
Recently Added See all »
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Lightweight add-on that automatically copies any highlighted text to clipboard.4 users
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Uploads your large attachments to your Dropbox instead of sending them by email.377 users -
Shows a colorful border around the "New Message" window, so you can tell different identities apart.
Builds on the original BorderColors and the "GT" version, adding different border styles.960 users -
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird1,798 users -
Change direction from Left to Right and Right to Left for Persian, Arabic, Hebrew etc. This Thunderbird extension is based on ComposeRTF available in https://addons.thunderbird.net/en-US/thunderbird/addon/composertf/102 users -
Type some text in your mail's body, hit the asciidoctor button and transform your mail into a pretty html5 asciidoctor document. Font awesome and code highlighting are enabled.97 users
See all 113 extensions in Message Composition »
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