Add-ons
Message Composition
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*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
12,959 users -
SmartTemplates
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.
7,888 users
Most Popular See all »
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Create and Save or Send Multiple Individual and Personalized Messages from a Draft64,555 users -
True "Send Later" functionality to schedule the time for sending an email.63,076 users -
Switch the signature on/off or choose a new one from your predefined set.38,671 users -
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird34,043 users -
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.25,531 users
Top Rated See all »
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Upload large attachments to your Cloud and send the link by email12,959 users -
Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)4,329 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.16,510 users -
Check that number of non-BCC recipients does not exceed a parameter.497 users -
Thunderbird は Outlook のようにアドレス全選択からの「一括コピー」ができません。
それを実現するためのアドオンです。1,245 users -
Macro Template is to replace mail templates with macros for date formatting.171 users
Recently Added See all »
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Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).0 users -
Estimez votre CO₂ quand vous rédigez un mail en un simple clic ! Pendant la rédaction de votre mail, cliquez sur l'extension afin de connaître l'émission de CO₂e générée par l'envoi du mail. Vous saurez aussi à combien de kilomètres cela correspond.3 users -
Updates the local OpenPGP Alias file from a server to simplify encryption for mailing lists, or email aliases in an organizational environment.
Please make sure config parameter "mail.openpgp.alias_rules_file" is set to "openpgp_alias.json".48 users -
Traffic light protocol extension for Thunderbird, messages are customizable in the option page.2 users -
Adds a Address Box button, toggles the Address Box in the Composer window24 users -
When reply to all is used, move original To: recipients to Cc:
Also forces "Cc:" to be displayed on all new messages.
GitHub Repo: https://github.com/cyb3rmonk/reply-all-auto-cc90 users
See all 146 extensions in Message Composition »
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