I only communicate by text app and have no issues. Even a lot of ladies who say no text app will respond to a well written message from a text app. Perhaps you don't, and I've had some say they won't take my booking because I'm using a text app, but to say "a lot" of ladies won't take your booking by text app is erroneous imho.
To the OP, use a text app and turn off notifications for the app. You will just have to make sure you're not missing messages when setting something up, but text apps are fine.
I didn't know people still used email lol.
I think the biggest difference with text apps vs email varies on the girl. Your typical LL poster will prefer texts / will accept apps etc. Ladies who are more known often use email since the majority of them have a direct booking form or contact form on their website. But this is an entirely other topic that has been discussed lots before. Different strokes for different folks.

