In standard NAV, PDF to email is the only solution.
It is possible to send information via text messaging, but you would need an external component to send the text, called from NAV.
What you need is a properly formatted text (consider NAV TEXT field limitation) and send it via SMS portal of your Service providers.
Many offer a webservice for this integration
"A bove maiore discit arare minor"-"From the old ox, the young one learns to plow."
Answers
It is possible to send information via text messaging, but you would need an external component to send the text, called from NAV.
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Many offer a webservice for this integration