It would be cool to be able to send an email or text to create a to do list entry. That way I can quickly add entries from a mobile phone when I think about them, rather than having to remember them until I'm back at a computer.

Texts (from approved numbers and/or starting with a password) should create an empty todo entry page with their contents as the page name.

Emails (also containing the password, or maybe PGP signed) should have their subject line turned into the page name and the body of the email as the contents of the page.