Separate inboxes for different accounts

I have 3 email accounts with Calendars and Contacts I'd like to know how to have them separate when I use Mail and iCal. Is there a way to do this with separate login pages or do I have to take one offline or use the web for 2 emails?

This is about iOS. I suspect you are talking about the Mac. You should ask one of the mods to move this to the appropriate section.

Mail and iCal doesn't have anything like login pages, but you can still have all 3 emails in one Mail Client as well as all 3 calendars. They will appear separate - you will see 3 inboxes and calendars in 3 colors with the option to hide them.

In Mail preferences just click on Accounts tab and add all of your email accounts.

Thanks. And can I separate the notes from the emails?