Willful ignorance seems to be your strong suit. Sure, I've voted by mail. When I was in the Navy and on deployment, I requested an absentee ballot and voted. There was control on that ballot. I requested it - I received it and voted - I sent the ballot back and they were able to compare my signature to the one I had on record. A solid chain of custody on the ballot. I have no problem with that.
Unfortunately, the Dems want to spam ballots out to people, who didn't request them and may not even realize that they were receiving one. They use outdated voting registries, so people, who have moved or died still receive ballots. There is NO chain of custody and ballot harvesting becomes fairly easy.
When you make it increasingly easier to cheat, people will cheat more. Having watched politics in this country for over 60 years, there is no doubt in my mind that the only reason the Dems keep expanding the number of days to vote and keep pushing spamming mail-in ballots, is because they can cheat their little hearts out.
Yes, I remember the good old days of Boss Daley in Chicago, where opponents votes ended up in lake Michigan and when Republicans died, they were born again as Democrats and voted prolifically. I know the Dems thirst for power hasn't abated and anything is fair, as long as it increases their power. Occasionally they get caught, but the reward seems to be worth the risk.
The Dems aggressively push the limits and for some reason, the Reps don't. More integrity, perhaps? Who knows?