Totally un-applish

I just recently had to do the routine password change on my corporate email/calendar.  Not a big deal.

However,  why does an iOS device (both iPod touch and iPad) prompt me for the new Calendar password (and remembers it from then on), but not for email (neither IMAP nor SMTP). I really have to go through settings to change this.

This is totally not like Apple.
First of all its annoying (to have to go to settings), and secondly its inconsistent (automatic for calendar, manual for email).

(ah, end yes, Android is manual only... up to 2.3 at least).