Question
Can I send a different response to a customer based on their email address?
Answer
Yes. To send a different response to a customer based on their email address, create a user tag for a single user or group of users. Then create a trigger that has the user tag as a condition to send the alternative response associated with the user tag.
For more information on how to create user tags and triggers, see the articles: Adding tags to users and organizations and Creating triggers for automatic ticket updates and notifications.