Question about FTP login and database management

[steveetm]

Hi!
I'm curious if it is possible to use different ftp login syntax, than the default [prefix]+username? I would like to use username@domain.name format instead, it is just my personal preference, but I like that format much better

My second question is related to database management, I would like to add multiple databases to a single user, so someone could see many databases with one login, is this possible, or are there some option to enable such functionality?

Thanks in advance!