Step 1: Login to webmail and select Squirrelmail interface.
Step 2: Click the Addresses option on top of mail interface
Step 3: Enter the following details
i) Nick name: Enter the Nick name for contact.
ii) Email address: Enter the email address.
iii) First name: Enter the first name.
iv) Last name: Enter the last name.
v) Additional info: Enter the addition information about contact.
Step 4: Click the button Add address.