I'm trying to make a test for email so I'm trying to add temporary callback does till work? 

this is the link https://accounts.zoho.com/oauth/v2/auth?scope=ZohoMail.accounts.ALL&client_id=1000.E32TVSL5IAK0SDDIL18KU9TY69H3SL&response_type=code&access_type=online&redirect_uri=https://sampleclient.com/callback