Q:
About Mail Carrier
Yes and also yes.
Q:
Two questions about unlocked mail carrier
1) Do the mail carrier work on when i am selling an item in tp?
2) Can other players see the carrier if they have not unlocked that mail carrier?
Yes and also yes.
Not affiliated with ArenaNet or NCSOFT. No support is provided.
All assets, page layout, visual style belong to ArenaNet and are used solely to replicate the original design and preserve the original look and feel.
Contact /u/e-scrape-artist on reddit if you encounter a bug.