Hello Hamed.
sending and receiving message is not very special for an android app
Yes, for native app is not very special, but challenging for hybrid app, because InAppBrowser, which Appery.io platform based on, doesn't provide any functionality to work with sms, thus plugin integration is the only way.
Alena told me that its debugging and it's out of our scope
According to current support's policy http://devcenter.appery.io/support-po... , it is something outside of the scope, but even if we could help you, one developer needs at least several hours to integrate plugin into Appery.io project for one OS(iOS, Android, etc.).
Imagine how many people would like to integrate plugins for their projects.
I am not sure is it possible or not in appery
If you found a phonegap plugin that helps reading sms, then this is possible,but you need to use it as it is, or find another one, we can't guaranty plugin's serviceability.