Add-ons
Message Composition
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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.
3,385 users -
*cloud - FileLink for Nextcloud OpenCloud ownCloud
Upload large attachments to your Cloud and send the link by email
33,237 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.99,448 users -
Check your emails for spelling and grammar issues70,024 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft64,758 users -
Switch the signature on/off or choose a new one from your predefined set.49,221 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.)46,896 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).45,630 users
Top Rated See all »
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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。323 users -
Macro Template is to replace mail templates with macros for date formatting.521 users
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Default "Reply" functionality pays attention to "Reply-To" in original email50 users
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Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).38,261 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft64,758 users
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Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.91 users
Recently Added See all »
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Automatically compress email attachments into ZIP files by extension and size rules, before sending or right after you attach them.0 users -
Private notes and todos for every site, domain, or exact page path.3 users
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OpenClaw-powered writing and reading assistance for Thunderbird. Preview and apply draft improvements, translations, and summaries; summarize or reversibly translate received messages.1 user -
Warns before sending messages from an account to configured prohibited email addresses or domains.1 user
See all 347 extensions in Message Composition »
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