Guild Wars 2

Okay so my E-mail is being cluttered with junk mail and its almost impossible for to get guild wars 2 emails. I made a fresh new email where i don’t get spam and junk mail and i want to use that for my account. how do i change my email? i have the serial code and all the information.

https://en.support.guildwars2.com/

then choose “ask a question”. one of the options is updating your e-mail