Steps to Configure your Zoho Account as POP in Thunderbird

• Enable POP in the ZOHO Mail interface.
• Launch Thunderbird application in your system.
• Select Edit » Account Settings. Click ‘Add new account’.
• Select ‘Manual Configuration’ in the screen that appears. 
• Provide your display name, Email address, and your account password.
• You may require an Application Specific password to set up the account in other devices if Two Factor Authentication is enabled for your account.

• In the Server Hostname, provide pop.zoho.in for Incoming and smtp.zoho.in for Outgoing.
• Select the port numbers to be ‘995‘ and ‘465‘ respectively. 
• Make sure that the Authentication type is ‘Normal Password’ for both servers. 
• Provide the ‘complete email address’ as your username. 
• Click ‘Done’ to save the changes. Clicking ‘Test’ sometimes gives an error message and resets the settings.