I’m just buy a subscription to mail services and now have some questions.

1. I add some mailbox aliases at CP - User Details - User - Mail accounts, and now I can use any of this alias as username at login, how can I disable it and use only mailbox address for login? I trying to delete it at «Change Login Email IDs» but there is no such options.

2. Is there any mail collector from another accounts? I know about adding POP3 account at webmail section, but it’s not for me.

3. I use OS X 10.9.2 and Safari 7.0.2, and I have a problem with scrolling mail list at webmail section. Scroll works only inside mail after I opened it, but not working on messages list.