In the third link, there is a comment regarding the domains we could use for sending text messages through email.
- AT&T: @mms.att.net
- Sprint: @pm.sprint.com
- T-mobile: @tmomail.net
- Verizon: @vtext.com
Before ‘@’, we need to put the receiver’s phone number, which is in this case our phone number. (As you may notice, I am doing this to know when a long calculation is finished.)