I know you probably have received this kind of suggestion before, but hear me out.
The 1hr mail delay adds absolutely zero value to the game. It is only there to slow down gameplay and frustrate people. I know you're trying to be blizzlike in some aspects, but this is one of the stupidest things blizzard has implemented in their game, and you don't have to copy it. You've already put so much quality of life into Ascension, and I don't see why this shouldn't be a part of it.
It's just so annoying to have to wait an hour when selling something via CoD, to have it reach its recipient, then another hour to get your gold. It makes CoD trading absolutely horrible and is the reason so few people even accept CoDs anymore.
But by far the WORST offender is the Auction House mails. Why do I have to wait an hour to get my gold from a sale? It makes zero sense. You'd think the AH has a premium mailing service subscription with all the 5% cuts they make off everyone.
(Turns out they do, but they use it only to insta-send you some spam mails )
But seriously, not only is there delay, but there is the AH SPAM MAIL that precedes getting your gold. Its sole purpose is to frustrate people to the ends of their patience. It cannot be auto-deleted by the Postal addon, so you have to delete it manually. I can't even begin to imagine the pain of doing so without an addon, and even with an addon, I've accidentally deleted mail that actually still had gold in it, because my mail was full of AH spam and while clearing it, the next wave of AH mail was delivered.
Also when your mail gets full of AH spam mails, the other players can't mail you anything until you clear your mailbox. This is incredibly stupid, because it doesn't impose such a limit for the AH mails themselves. The error it gives the sender makes zero sense too, so most of the times I got it, I thought something bugged out with the server: "You have reached the maximum allowed mail recipients". So misleading.
I think it would be in everyone's best interest if the mail delay and AH spam mails were removed entirely from the game, so we can take back control of our own mailboxes.
Thanks for your time and consideration in reading this wall of text.