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.
6,106 users -
*cloud - FileLink for Nextcloud and ownCloud
Upload large attachments to your Cloud and send the link by email
29,460 users
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.97,305 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft70,668 users -
Switch the signature on/off or choose a new one from your predefined set.54,429 users -
Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).51,672 users -
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.50,804 users -
Check your emails for spelling and grammar issues35,743 users
Top Rated See all »
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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.)12,180 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.21,036 users -
Check that number of non-BCC recipients does not exceed a parameter.746 users -
Quickly choose one of the previously selected colors for a message text1,363 users -
Upload large attachments to your Cloud and send the link by email29,460 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。910 users
Recently Added See all »
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SpamTester allows you to test the spam score of your email using popular anti-spam software (SpamAssassin, Rspamd...). This is useful to know if your email will fall into the recipient's spam (or even get your mail server blocked).23 users -
You will be able to create and automatically insert templates for each account.24 users -
Adds a Proton Mail button to the toolbar. The button simply opens a new tab with the https://mail.proton.me webpage.76 users -
This add-on mimics the mentions behavior on Outlook when mentioning a contact with the '@' sign. The contact selected is added as a link in the email body as well as to the recipent list of the email.106 users
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An integrated netiquette checker for EPITA students.
List all the netiquette rules that are not respected when writing an email.4 users
See all 184 extensions in Message Composition »
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