SMS or Email read (TTS) by Sonos

I’ve seen a Smart App that can play a custom message at a trigger event (contact closing or various others). But I’d like to be able to send a text message or email with “#sonos” to family that has their smartphone connected to the SmartThings system and have it play through the Sonos system. I tried writing one myself but I am a novice and I couldn’t figure out how to continuously search new SMS or Email messages for #sonos.
(Also, an option for All texts or Texts from specific people, or during specific modes would be helpful)

Any help would be appreciated!