Battle pet
The quest starts with a dropped Lost Mail on the ground by a mailbox in Dalaran.
Respawns approx every 2 hours.
This Lost Mail is also BoE and a copy is mailed to you upon completion of the quest, so you can give it to a friend.
We do have Lost Mail in glass tab of guild bank – you may use that one all we ask is that you replace it with the one you will recive during quest so someone else can use it .
https://www.wowhead.com/postmaster-questline
None the Wiser Guild 