All major wireless carriers offer an SMS gateway that allows text messages to be sent into and out of their wireless network. Notifications sent as text messages use these gateways. To send notifications as text messages, you must follow the address format provided by each wireless carrier.
For example, if you want to send text notifications to a user's Verizon mobile number, (123) 456-7890, you would send it to 1234567890@vtext.com.
| Wireless Provider | SMS Address Format |
| AT&T | 1234567890@txt.att.net |
| Boost Mobile | 1234567890@myboostmobile.com |
| Cricket | 1234567890@sms.mycricket.com |
| Project Fi | 1234567890@msg.fi.google.com |
| Sprint | 1234567890@messaging.sprintpcs.com |
| T-Mobile | 1234567890@tmomail.net |
| US Cellular | 1234567890@email.uscc.net |
| Verizon | 1234567890@vtext.com |
| Virgin Mobile | 1234567890@vmobl.com |
Messages sent through an SMS gateway are limited to 160 characters. Longer messages are broken into multiple texts or are truncated.