Sending SMS through email is very, very easy. If you can be reminded through email, you can now be reminded through SMS.

• T-Mobile:phonenumber@tmomail.net
  Virgin Mobile:phonenumber@vmobl.com
  Cingular:phonenumber@cingularme.com
  Sprint:phonenumber@messaging.sprintpcs.com
  Verizon: phonenumber@vtext.com
  Nextel: phonenumber@messaging.nextel.com

  where phonenumber = your 10 digit phone number

I have email reminders sent to me for everything. If you know the correct email address, you can also send these messages to your cellular phone. Here are the email addresses for the 6 most popular cellular phone carriers:

If you don’t know the phone carrier for the cell phone number you are attempting to call, you can try this universal service.