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.
3,743 users -
*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
37,415 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.116,344 users -
Check your emails for spelling and grammar issues73,367 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft72,348 users -
Switch the signature on/off or choose a new one from your predefined set.52,844 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).50,950 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.)49,756 users
Top Rated See all »
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Quickly choose one of the previously selected colors for a message text1,326 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。433 users -
Macro Template is to replace mail templates with macros for date formatting.567 users
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Default "Reply" functionality pays attention to "Reply-To" in original email53 users
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Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).43,972 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft72,348 users
Recently Added See all »
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Certify your emails on the blockchain directly from Thunderbird. Legal-grade, eIDAS-qualified proof — without changing your workflow. Add the certification BCC address to your compose window in one click.0 users
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Automatycznie kompresuje obrazy (→ WebP) i skany PDF przed wysłaniem. Obsługuje drag &
drop, przekazywanie wiadomości oraz wstawianie obrazów inline.2 users -
Use Thunderbird FileLink with your own self-hosted PsiTransfer server to upload attachments and share links. You must provide the URL of your own PsiTransfer server in the add-on settings. This add-on does not include hosting.1 user -
Reply with quote without useless things (strip off images, signatures or old messages).
Minimal extension made after considering environmental impact of the size of exchanged mails between people.
Simple options. No unnecessary permission.4 users -
NestorAI is an AI assistant for Thunderbird that helps analyze email, prepare reply drafts, organize messages, and generate recaps, while also supporting local AI so processing can stay on the user's machine.6 users -
Send files directly from Thunderbird using PARAMANT — post-quantum encrypted, burn-on-read. Files are destroyed after first download. Requires a free PARAMANT API key.1 user
See all 304 extensions in Message Composition »
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