In game mail boxes?

TUDE

Will there be a way to trade / give items to friends and alts not in game at the time, like mailboxes?

Fantmx

Good question.
https://ashesofcreation.wiki/Mail

Raw gatherables and materials are not able to be mailed by players.[1][2][3]
Purchases of anything other than materials and gatherables from integrated auction houses will be mailed to the purchaser.[4]
Social messages sent via mail will be received instantly.[1]
It hasn't been decided whether crafted items such as gear will be able to be sent via mail.[1]
From an item standpoint obviously we can't allow mailing to include any type of resource material or raw gatherable because those are central to the gameplay and transiting through the caravan system and economic regions. But it may be possible to send completed crafted items like you know gear, equipment, stuff like that. But it's something we're still discussing.[1] – Steven Sharif