I know how to add a new account in Outlook, but any time I tried it, I wound up with about two or three extra folder sets that I couldn't delete. I absolutely despise Outlook's .pst data file system; I think the feeling's mutual, because every time I try to fiddle around with them, I wind up screwing something or other up and having to muck around for an hour before everything is set right.
Also, at least to the best of my knowledge, there was no way to get separate accounts to download messages to the same inbox; I may be wrong on this one. I know that there was no drop-down selection menu like Thunderbird uses so that you can select which account you'll be sending the e-mail from; this is one of the features about Thunderbird that struck me immediately. I did finally figure out profiles in Outlook; however, to use them, I'd have to log in under one account, close out, then log back in in another, which was very cumbersome. As for the multiple SMTP accounts, I have two set up right now, even though they're not absolutely necessary, and I've sent out multiple messages without experiencing any problems.
If you're still using Outlook, please, do yourself a favor and check it out.
