Use APKPure App
Get MAXS Module SmsSend old version APK for Android
Send SMS messages via MAXS.
Module User Guide: http://projectmaxs.org/documentation/module-smssend/user_guide.html
This is a Module for MAXS, which does not install any launcher.
You need "MAXS Main" and a configured MAXS Transport to make use of it.
MAXS Main: https://play.google.com/store/apps/details?id=org.projectmaxs.main