SMTP messaging is typically free, while SMS messaging is not. You may be wondering which you should use, or if you should use both. I suggest using both. SMTP messaging is a little more powerful than text messaging, because it’s …
… not subject to the same limits, but you have to be very careful when using SMTP.
For one thing, because SMTP is sent via email, you’re subject to the same laws email marketers are. Be sure you know the CAN-SPAM act inside and out and you comply with it, because one mistake could cost you as much as $11,000 in fines!
SMTP is also very unreliable. Since it’s free, cell phone carriers don’t have to deliver those messages at all. For this reason, SMTP messages are often delayed, or even never received at all.
If you’re going to use SMTP, I suggest making the most of all the features. Embed other media, use longer messages, but don’t forget to send a quick SMS message to supplement in case the recipient never receives the SMTP version.
Here’s the best SMS platform I’ve found in terms of service and value : www.SendTextAlerts.com (unlike most providers there is no per message fee and they also include their ‘TextnPix’ service for free)