@yariplus Thanks but no. I don't have a specific need at the moment. Of course if the plugin already supported others I could probably figure out some way to incorporate them into a future newsletter email.
So perhaps you can change the code where it parses an RSS feed to reading the twitter feed instead. Or use an twitter to RSS service like https://twitrss.me/
If you wrote an IFTTT plugin though, that would be pretty cool 🙂