One of the features of my favourite email client, Mailmate, is the ability to copy a unique link per message.
Upon clicking the link from anywhere, Mailmate will be opened showing the associated email.
I use this feature a lot to link to-do in Things. Mailmate even offers a bundle to automatically add an email link to Things.
However sometimes I already have an existing to-do, and I need to paste the Mailmate link.
To make it easy, I created an AppleScript in Typinator that pastes the link of the selected Mailmate message.
Reported here for posterity :)
tell application "MailMate" set selectedMessages to messages set theMessage to item 1 of selectedMessages return message url of theMessage end tell