Step 1:

Click on ‘Tools’ and select ‘E-mail Accounts’

Step 2:

Select ‘Add a new e-mail account’. Click ‘Next’

Step 3:

Select ‘POP3’

Step 4:

Fill-up the fields as per instructions below:
Your Name: Enter the display name. This name will be displayed to the receiver when you send a mail.
E-mail Address: Complete Email Address
Incoming mail server (POP3): pop.rediffmailpro.com
Outgoing mail server (SMTP): smtp.rediffmailpro.com
User name: Complete Email Address
Password: Password to access your email

Step 5:

Now click on 'More Settings'

Step 6:

• Click the tab 'Outgoing Server'
• Select the option 'My Outgoing server(SMTP) requires authentication
• Select 'Use same settings as my incoming mail server'
• Now select the tab 'Advanced' on top

Step 7:

• Enter '110' for Incoming server(POP3)
• Enter '587' for Outgoing server(SMTP)
• Click 'OK'

Step 8:

Click ‘Finish’