Absentee Ballots are great. There is a process to get your ballot sent to you, and only you. I have needed to vote via this method a few times, since Election Day nearly always comes during Elk hunting season. But it’s simple and effective.
Mail in voting is different, and stupid. Riddled with fraud. Bulk ballots sent to old, invalid addresses. Ballots sent to dead people. Sent to apartments where people have moved from. Ballots sent to non citizens. Ballots sent to P.O. Boxes that have changed hands. There is no vote integrity with widespread mail in voting. It’s truly dangerous to a democracy dependent on an accurate, effective election.
Remember, Vote Early, and Vote Often.