Email delegation is now available to all Google Apps customers. This Gmail feature was previously only available to Google Apps for Business.
Administrators must first enable mail delegation by checking the ‘Mail Delegation’ checkbox under ‘Email Settings’ in the administrator control panel.
To enter a delegate, users can select the ‘Accounts’ tab under ‘Settings’ in Gmail and click ‘Add another account’ to enter their delegate’s email address.
Once the delegate is signed into their own own Gmail account, they can then access the other person’s account from the account selection menu at the top of Gmail.