Usar o APKPure APP
Obter o APK da versão antiga de SMS Gate para Android
portão SMS simples Android, open-source
Allows you to backup all your SMS to Gmail. Also have simple SMS scheduler with multi sim support, no ads, open-source, GPLv3. This app uses Accessibility services (optional).
Web Interface:
https://axet.gitlab.io/android-sms-gate/