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.
3,620 users -
*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
37,064 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.111,198 users -
Check your emails for spelling and grammar issues73,637 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft70,445 users -
Switch the signature on/off or choose a new one from your predefined set.51,882 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.)50,678 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).50,493 users
Top Rated See all »
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Quickly choose one of the previously selected colors for a message text1,278 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。293 users -
Macro Template is to replace mail templates with macros for date formatting.497 users
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Default "Reply" functionality pays attention to "Reply-To" in original email56 users
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Create and Save or Send Multiple Individual and Personalized Messages from a Draft70,445 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.90 users
Recently Added See all »
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Adds an extra Send button to the compose window that automatically copies the message to a configured list of CC and/or BCC addresses (e.g. a CRM logging address, a team archive mailbox, or a manager).0 users
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Converts recipients using the identity reply-to address on send to the format required by addy.io. If the reply-to field is empty, does nothing. If populated, transforms recipient address(es) (i.e. TOs, CCs, and BCCs) based on the reply-to address.0 users -
Drag and drop files from your file manager directly into the compose window to add them as attachments.
从文件管理器或桌面直接将文件拖拽到写邮件窗口中，即可将其添加为附件，无需再点击附件按钮逐级查找文件。1 user -
A Thunderbird MailExtension that adds an `R-b` button to the compose window and inserts a `Reviewed-by:` line for the currently selected sender identity at the current cursor position.2 users
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Delays sending an email and provides a notification to undo it.2 users -
Encrypt and upload large files with to Retyc. Recipients with a Retyc account get E2E encryption; others access files using a passphrase.2 users
See all 310 extensions in Message Composition »
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