Webmail client that can open multiple email addresses at once like a desktop client

Question

I've got 5 email domains with multiple email addresses on each domain. Traditional webmail clients only seem to allow you to browse a single account at a time (ie, you log into that account). With over 20 email addresses I need to monitor, this is obviously a major time sink.

Is there a (preferably OSS, unix-based) webmail client that simulates a desktop email client, ie I log in once and can access all the email addresses from a central control panel? I've considered using a ticket system but that is overkill and not really used to my needs.

Answer 1

Why don't you use Gmail's POP3 feature ?

Check this out: http://mail.google.com/support/bin/answer.py?hl=en&ctx=mail&answer=21288

Answer 2

Try Zoho Mail. It's got the power of Gmail but a more traditional interface. I'm not aware of any limit on the number of accounts it can handle.

Answer 3

I can't find anything to either confirm or deny that it supports multiple accounts, but this popped up on Google Reader earlier and might be worth a look, it describes using the MUTT command line email tool:

Mutt described at Lifehacker