Sends a short plaintext message to a phone number via its carrier's email-to-SMS gateway.
Resolves the gateway address with smsAddress, then sends a text-only message over
the usual SMTP send path (connect, optional AUTH, send, quit). No HTML body is
sent because gateways expect plain text.
Sends a short plaintext message to a phone number via its carrier's email-to-SMS gateway.
Resolves the gateway address with smsAddress, then sends a text-only message over the usual SMTP send path (connect, optional AUTH, send, quit). No HTML body is sent because gateways expect plain text.