Thread:DarklordVor/@comment-27388384-20151212223305/@comment-6709481-20151213110725

Yes this "mailbox" is called "present" in game. It has unlimited space which people used so that they don't have to throw away so much things away. However it only stays for 90 days and after that it's deleted. Also note that you can only see the first 100 items. To see the 101st - 200th items, you need to collect the first 100.

Advent Fairy as well with Pertcha MAY return as evident by Santa Oracle reappearance from 2014 Christmas Event and Reindeer Girl reappearance from 2013 Christmas Event.

The send button is the blue reinforcement button. Be sure to have good allies and check the Comrade Requests page to put your name OR add random people who wants to help you on the hunt.