I just noticed this feature in Things:

Which reminded me of this feature in WordPress:

Which reminds me it was just this year HEY announced you could blog from your email account:
This post you’re reading right now is the world’s first HEY World post. And I published it by simply emailing this text directly to world@hey.com from my jason@hey.com account. That was it.
We often think of email as something of a read API (e.g. get notifications from services), but it’s awfully cool as a write API as well, sending content and instructions to services.
One response to “Email as a write API”
Way back in the day I used to do mobloging (remember when posting pictures to the Internet was hard?). My phone didn’t have a data plan so to post I would send an MMS to an MMS-to-email gateway thingy that T-Mobile provided. I had a WordPress plugin called Postie that would login to an email account, parse email messages, download the image(s), copy the text, and create a new WordPress post. Kinda crazy how it even worked at all.
This entire post was pecked into the tiny keyboard of my T-Mobile Dash and posted shortly after the talk https://www.russellheimlich.com/blog/google-dc-talk-with-ben-huh/index.html