I read Stan Schroeder’s nice article, 5 Ways To Log Into Several Gmail Accounts At The Same Time, and found another way to achieve these goals.
My method is an improvement on method 2, Master account, from his article. With this method, you will only need to log in to one Gmail account to access all of your other Gmail accounts, and all of your other POP3 accounts, as well!
I use this system to access multiple Gmail accounts and a POP3 account on my Droid 2, Outlook, and Web access. I only need to add one Gmail account to Outlook and my Droid 2, so access and retrieval is quick!
As in Stan’s Master account idea, you will have one account in to which you will sign in to access the other e-mails.
In your Gmail account, access Settings > Forwarding and POP/IMAP, and select either one of the Enable POP options. Decide whether or not to keep e-mail on the server, archive it, or delete it when it’s accessed.
2. In your master account, access Settings > Accounts and Import, and click Add POP3 email account in the Check mail using POP3 area.
Follow the wizard. Add the e-mail address of your other Gmail accounts and click Next.
For the Username box, enter your entire Gmail username.
In the POP Server box, enter: pop.gmail.com.
Specify Port 995.
Select Always use a secure connection (SSL) when retrieving mail.
Select Label incoming messages as it makes it easier to figure out which e-mails came from which account.
Click Add Account.
You can also configure the account to allow you to send e-mail from the other e-mail address, so that it does not come from your master account address.
The outgoing mail server is smtp.gmail.com, port 587, do not use SSL encryption.