Thinking of switching from Outlook 2007 - license question

how many e-mail addresses can i have with a free license? I am using Outlook 2007 and have about 20 different e-mail addresses to help control spam. Does that mean that eM license structure would consider that as 20 accounts? I am unclear what the 2 accounts are . . e-mail accounts? Or, are they like the Outlook pst files?

Yes, two accounts mean two email addresses. If you need 20 email addreses/accounts, you will need to purchase commercial version.