Use FirstNet with
Send Text and SMS Messages through FirstNet
FirstNet supports two protocols: SNPP and SMTP
Of the two, SNPP is far more reliable and efficient and we recommend configuring that. If you don't already have a FirstNet carrier in your list, this is what you'll want to do:
1) Open PG Admin.
2) Right click Carriers, select Add.
3) Specify the following:
Max Chars: 160
4) Click Apply.
Then set each of your FirstNet recipients to use the FirstNet carrier and use their 10 digit cell phone number (no spaces, dashes or domain information) as the ID/PIN.