Hai, Refer the following link Send SMS Messages from Process Builder (https://www.twilio.com/docs/salesforce/sending-sms-messages-process-builder) Twilio Send SMS Message allows you to send a text message from Process Builder. This Apex class is useful for single message use cases such as alerts and notifications.
Please refer below link. This may help you.
http://www.clintslee.com/2010/07/19/send-sms-from-salesforce-build-your-own/
Refer the following link
Send SMS Messages from Process Builder (https://www.twilio.com/docs/salesforce/sending-sms-messages-process-builder)
Twilio Send SMS Message allows you to send a text message from Process Builder. This Apex class is useful for single message use cases such as alerts and notifications.