For years I have played MMO’s to realize that GW2 is very stunted in the fact there is only a limit to 10 mail slots to hold your mail.
In most games I would expect.. 50? even 80 mail slots. I am constantly left having to take screenshots of mail to remember what someone has said to me for later. It makes it very problematic for roleplayers also who use the mail system as an in character form of communication.