"Can a citizen be rejected to mail in vote? no they can't they are auto sent out to the voter rolls - whereas you go through an application process to vote absentee."
Wrong!
Your information was weighed, measured and found wanting.
Just a few examples:
https://dos.myflorida.com/elections/for-voters/voting/vote-by-mail/
https://www.state.nj.us/state/elections/vote-by-mail.shtml
https://www.votespa.com/Voting-in-PA/Pages/Mail-and-Absentee-Ballot.aspx
https://www.sos.texas.gov/elections/voter/reqabbm.shtml
https://elections.il.gov/electionoperations/VotingByMail.aspx
.
