Sending SMS from NAV
two useful links about sending SMS from NAV.
two useful links about sending SMS from NAV.

Sending SMS from Dynamics NAV with 5 lines of code (Windows Mobile Automation)
What you need: Outlook 2010, Exchange 2010, NAV (any version supporting automations…), Mobile phone with Windows Mobile 6.1 (with some update) or 6.5 http://dynamicsuser.net/blogs/kine/archive/2011/01/18/sending-sms-from-dynamics-nav-with-5-lines-of-code.aspx
Using Web Service to send SMS from NAV (Web Services)
method to send SMS notification through the Webservice using service provider interface protocols.
http://x-dynamics.blogspot.it/2011/07/using-web-service-to-send-sms-from-nav.html
Nice