Off TP mail trading
Just don’t complain later that u got scammed that’s all I gotta say
vvuevv
Using the mail to trade is not bannable, but giving someone a large amount of gold is highly suspicious. The person who receives the gold can get flagged and possibly banned for being suspected of buying gold. A few months ago, people claimed they were banned due to many guild members sending them small quantities of gold, even if only a couple times, though this was then the system was likely first implemented.
Also note that trading through the mail is not supported by ArenaNet, so whatever happens between the two of you, stays between the two of you. If something goes wrong, ArenaNet won’t help you, unless the problem was caused by a bug.