So after going back into the game now that I'm feeling better (or I'm just learning to live with the tinnitus) I noticed something funny in my mail. All my items that I stashed there are gone. Yes. I forgot to take out the items before the mail expires so I have lost all my stash of traited items, gifts, funny mails from friends, everything.
What really bothers me is that I could have prevented that if not for my procrastination, ear problems, being busy with other games/job/housekeeping, writting down the wrong due date... On the other hand partner is all like "It's no big deal, there is nothing in those mails that we cannot get back again sweetie :3". I envy him and his "no biggie" attitude in life. :3
Long story short, learn from my fail, don't use the mail as another inventory, or if you do, remember to take out the items before the mail expires.