EmailSMS

EmailSMS is a simple SMS solution for organisations that allows the sending and receiving of SMS using email. Send a message in an email and it will be delivered as an SMS to a mobile phone. Messages can be sent by SMS from a mobile phone and delivered to an email inbox.

Sending a message to a mobile is as simple as sending an email. The text of the email is sent to the mobile as an SMS message and will quickly arrive within seconds of you sending the email. When using the two-way EmailSMS service a message can be sent from a mobile as an SMS and that message arrive in an email inbox.

For those who wish to know the technical details of this service, you can find them in the SMTP (simple) and SMTP (sophisticated) API documents that can be found in the Documentation section.
EmailSMS User Guide