What does this do that is "smart"? The article only mentions one concrete thing that this program does, which is figure out your e-mail address when you send it

What does this do that is "smart"? The article only mentions one concrete thing that this program does, which is figure out your e-mail address when you send it an e-mail: For example, send a short e-mail to task@do.com and it will automatically detect your address and add an entry. I do not think this counts as smart.