Hello, I am software engineer from Serbia.
I have team of 4 Android developers and we are ready to start working on this app.
This isn't that hard to make and we can do it in few days.
But if you want to create good app it has a little more work.
For example you will need to check is there internet connection if yes then send that info.
If not we will need to create database on phone and store all that data.
When phone connects to internet we will send you whole list of sms messages.
This need to be fully tested so it has a lot of job to make it perfect.
I hope you will contact us so we can discus about more details.
If you have any questions feel free to ask.
Kind regards, Mike.