Inbound email action email to case creation restricts for exiting email id

Hi All,

As per email to case creation requirement we have to create separate email id for India country & rest of the countries are using existing email id. But if we used existing email id then no case will be created for India & if we used email id for India then no case will be created for others country. How can we handle this scenario?
Currently both of the email id is creating a case for India by email to case Inbound email action, we want to restrict 
Please assist here.