Guild Wars 2

for the first time i bought something from the gemstore (i had some gems in spare after getting a characterslot + bigger storage). i got a wintersday mystery box, but where can i pick it up after purchasing ? its not at the tradingpost to pick up and not in my inventory either but it is listed in my recent purchases.

It will be in your mail

does that mail come instantly or is it usual that it takes time ?

should be instant. longest it took for me was 3 seconds

If you have items already in your mailbox, it may be queued behind them. I believe 10 items is the most the mailbox will display, so you may need to clear out old mail before you get the item.