You go to Slateport city and go to Pokemon market. Here you can buy Harbor mail.
You can buy Harbor mail at Slateport City
You buy harbor mail and give it to a girl she will give you a coin case.
You can get it for free in the trick house
Slateport city Mart
You go to Slateport city and go to Pokemon market. Here you can buy Harbor mail.
Go to slateport city and go into the pokemart and talk to the cashier he will be selling harbor mail.
You can buy Harbor mail at Slateport City
You buy harbor mail and give it to a girl she will give you a coin case.
You can get it for free in the trick house
Slateport city Mart
you go to the slateport city mart and you can buy it
You go to Slateport City and go to the market you need to buy Harbor Mail Then go to Mauville City..go to the house next to the mart talk to the lady and she will give you the coincase
go to the slateport poke mart scroll down the item list and at the bottom it sould say harbor mail $50, buy it and you have mail
Go to the house next to the casino. When the lady says," I wish i had harbor mail" , go to the slateport Pokemart, buy harbor mail, go back and talk to her, and yes when she wants to trade you a harbor mail for a coin case.
buy it
i dont know where to find it but you can buy it at slateport city`s mart