Wondering when alerts are sent via SMS or SMTP? This Article discusses how Konexus utilizes these two text messaging technologies.
From Weather Integrations:
Alerts sent to subscribers or contacts using Weather Integrations will be sent by SMS.
From the National Weather Service (NWS):
Alerts sent to subscribers or contacts generated directly through subscription by signing up on an agency's web portal will be sent by SMTP.
Alerts sent to internal groups or contacts from the Send Alert form or the legacy Send Internal Alert form will be sent by SMS.
Alerts sent to public groups or contacts from the Send Alert form will be sent by SMS. Public Notifications sent by the legacy Send Public Alert form will be sent by SMTP.
Defining SMTP vs. SMS:
SMTP - Simple Mail Transport Protocol. SMTP is the standard for email on the internet. Most cell phones are able to receive text messages in this format. In essence the phone receives an email, and in fact, a message delivered in this fashion is sent to an address like firstname.lastname@example.org.
SMS - Short Message Service. SMS is a message system designed for cellular phones. Unlike email, SMS messages are sent to phone numbers, not addresses. They are routed through a gateway, which connects directly to the carrier's network. In order to receive SMS messages, the recipient must first give permission by text and agree to terms.