Add Mail System about melia HOT 1 OPEN

1. I'd say we should favor the names from the English localization in most cases, unless there's a compelling reason to go with the internal name. For example, the MNA property is called SPR in English, but copying that would be rather inconvenient, since we need to constantly cross-reference behavior in the client, where this property is called MNA. In the case of mails I don't foresee such issues though, so it should be fine.
2. Since messages need to be individually manageable, such as marking them as read, I'm guessing you would primarily be moving the message text to another table to prevent duplication when sending messages to a lot of players. Honestly, I don't know if that's worth the effort, though it would save some disk space. And if you had a server with a couple hundred or even thousands of accounts, a somewhat lengthy message could indeed balloon in size quickly. It might be worth a look.

from melia.