How To activate Email ResponderTo activate the Email Responder Trial version into a Full version, a license must be acquired first. Please follow the Product purchase guide if you want to learn how to purchase a license. After a license is purchased, you will receive an email with an activation key. This is the same as your Order ID number and will look like this: 105XXXXXXXX408. Please follow the How to find Activation Code article if you want to learn how to find your activation key.