long ago I had mailed some MOs to a CC. They did not shut me down for that--it was like once and a long time ago when less shutting was done.

But what happened is they lost or destroyed them by mistake as they told me automatic letter openers and machines credit payments and they got stuck or something. I had to fight off fees and issues for weeks but it got sorted out. But in the meantime, I also had to get the MOs replaced. With both MG and WU, you have to pay $15 per MO and wait a couple months to get money back. You cannot talk to anyone live and it is a pita. It is NOT recommended to mail MOs. Mail can get lost sometimes

Paying an equity line at a bank can be good to do with mos. One reason is because you get credit for it right away as a payment, and they can sit on the funds for the max ten days it may take to actually clear and collect the funds without you needing to worry as you wont be using that money anyway. But yeah, paying a place where you have a CC is a bad idea.

I was shut by BofA not for depositing mega MO, rather, it was because when they merged w Merrill Lynch, ML had eyes on whatever I was up to and they told BofA who now put eyes and did not like it.

With Citi I think it was when they pulled all their banks from MA. That made them put eyes on accts like mine and that was that with them too. I had been depositing MOs there a lot.