How To: Send Free Text Messages Through Email (All Things Marked)

Nice trick to know. It works for Verizon at least (I tried it).

Update: Josh, over at Madkast (they are the good people who make it easy to share the posts on Sources and Methods with others -- just click on the green box that says share after the title), says that Zemble is another way to send text messages to individuals or groups over email. Thanks, Josh!