1)Login to your Gmail account, click settings and select the “Forwarding and Pop /IMAP” tab. Select “Enable POP for all mail” and “Enable IMAP” and click “Save changes”
2. Start Outlook 2010, choose the File tab from the menu and select the Info option from the left. Now click on “Add account” as shown below
3. In the pop up window that opens, ignore all the options and select “Manually configure server settings or additional server types”
4. In the next step, select “Internet Email” and hit “Next”.
5. Now enter your email account credentials and the Gmail mail server details. Choose the incoming mail server as imap.gmail.com and the outgoing mail server as smtp.gmail.com. Google Apps users need to use pop.gmail.com and smtp.gmail.com respectively.
NB:Leave the Option “ Require logon using Secure Password Authentication (SPA)” unchecked.
6. Next, click “More settings” and select the “Outgoing server” tab. Select the checkbox “My outgoing server requires authentication” and check the radio button “Use same settings as my incoming mail server”
7. Now select the Advanced tab and enter the port numbers for the incoming and outgoing mail servers. Use 993 for the IMAP Port and 587 for the SMTP port.
Remember to choose SSL as the connection type.
That’s it. You have successfully configured Outlook 2010 for your Gmail and Google Apps accounts.