In GEORGIA you can check and see if your absentee ballot has been accepted or rejected.https://www.mvp.sos.ga.gov/MVP/mvp.do
With your name, DOB, and county info you can log in see the status of your absentee ballot. It will tell you if it has been accepted or rejected.
Hopefully other states offer a service like this as well.
Check with your states SOS or elections -
After entering your info on this page, you will be taken to another page. There is a menu to the right and you select the last option about verifying your absentee vote.
In fact, you can track your ballot from "received" to "counted" with just a few clicks.
Of course, we do all VBM.