I am 25 days away from my 12/8 vacation and no Mickey mail. Got DME a couple of weeks ago for me, but not for my son, so he's waiting for his yellow tag and voucher (he hadn't booked his flight @ the time, he has now.) My recollection from previous mail watches/countdowns is that Disney sends mickey mail to TAs for people who have them and the TAs then forward the vouchers & luggage tags to them, thus they always get them a bit later. Seems like 25 days is a bit short, based on previous experience for me, I sort of expected it last weekend.
edited to add: waiting in the mail tonight when I got home from work - Mickey mail! Must say, I like the castle luggage tags better than this years faces.