Number of e-mail accounts would depend on the package you will choose. See the attached table:

Your SMTP is smtp.domain and your POP3 is pop3.domain example: pop3.goweb.ph and smtp.goweb.ph (Note: if you are using any email client like outlook express, Microsoft outlook, Eudora, when you are checking mail your username must be with domain; example carlo@goweb.ph

Yes, you can check it via web mail. You will receive your web mail server as well as your username and password through the welcome letter that will be sent to your alternative e-mail address once your account is activate.