We have a few websites that allow their users to subscribe to SMS notifications when updates to the site are being made. The system will send out SMS notifications to the devices through the carriers SMTP gateway using the number@carrierpostfix address. What we need to know is if the addresses that is sending out SMS notifications have the potential of being marked and blocked as SPAM by the carriers because of the amount of notifications that are being sent out. If so, what can we do to prevent that?
