As crap as City can occasionally be with ticket organising etc they'd have to be particularly fecking useless to send seasoncards out in packaging that couldn't fit through a standard letterbox! It's a card which people will need in about a weeks time, do they really want thousands of them being taken to random post offices around the country waiting pickup because the box was too big to be delivered without anyone being at home? It'd just result in the ticket office having to deal with hundreds of emails/telephone calls from fans unable to get at their ticket before the Chelsea game and wanting replacements!