How to Check Multiple Email Accounts Quickly

Problem:
You have a number of email accounts with gmail, yahoo, msn, etc and each time you want to check your emails it takes some time logging into these accounts. Your bright mind tells you that there must be an easier and quicker way to check all these email accounts at once!

Free Solutions:

Desktop-based tools:
Thunderbird, YPOPs, Zimbra Desktop, WebMail

Web-based tools:
Fuser, Mail2Web

My notes:
Use a more reliable & popular tool such as Thunderbird or Zimbra rather than using any tools you see on search engines randomly + if you use these tools it would be slower than checking your emails directly on google for instance.