Message settings — Android SMS gateway

An Android phone runs an app that polls this site and sends queued texts via its SIM (a pull model — the site never connects to the phone).

1. Choose the Android provider, switch on SMS, and save.
2. Generate a device token and copy it, with the polling URL, into the phone app (sent as the X-Gateway-Token header).
3. Set “max per minute” low to stay within carrier fair-use, then send a test.

SMS only, Android only, and best kept to low, human-paced volume.