proton mail

Instantly insert your signature into Word, Pages, Mail, many others.

Shows the geographic origin of an e-mail.

Save your Apple Mail messages as PDFs.

Enables bottom-posting for Mail messages.

Speaking email checker for Apple Mail.

Faster Mail.app spell checker.

Notification plugin for Mail.app.

Adds a follow up item to emails and contextual menus in Apple Mail.

Archival tool for Outlook mail and calendar items.

Connect Apple Mail email to friends' Facebook profile pictures.