I read lots of newsletter and I often want to send things to sublime from my email client (Gmail, but it could be something else).
For now it is really painful.
What I can do is copy a piece of text and send it to sublime, but I lose the context / source, so if there is a link to the email (with substack for example) I got back to Sublime, edit the card and add source.
But if there is no link to read the email outside the mailbox, and have no solution.
So, I add the following idea : why not forward the email to a sublime email adress, that whould add the content to sublime ? and keep a track of the original email somewhere.