When Schedule it automatically creates and sends email alerts these can be automatically convert to SMS messages and sent to any mobile phone. Generally all you need to do is signup to your phone providers Email-To-SMS service, then enter the mobile phone number as the email address of the person who should receive the SMS but check with your provider first for the correct format.
A quick search on Google will find many online Email-To-SMS providers and their pricing,
Click here to search Google.
For more details on using email alerts please see
this FAQ page.
(text, txt, sms, mms, phone, message)