Delivery method: GW2 gold can be sent to all servers by mail without server name
GW2 carried out a rule : Beginning on March 31, 2015,
There will be a limit on how much gold a single player can receive through in-game mail and/or the Guild Vault each week.
The maximum amount of gold that can be sent via a single in-game mail will be 500 gold.
The maximum total amount of gold that an individual player account can accept in a week will be 500 gold.
So you only can use the max 500 Gold in a week .