If you have not received your activation email after purchasing Spine, it is possible that the email was marked as spam. Please check your spam or junk folder to see if it was delivered there. If you still cannot find the email, you can use the Spine license recovery page to have the email sent to you again. If you continue to experience issues, please contact Esoteric Software directly at contact@esotericsoftware.com with the email address you used for the purchase, and they will assist you further.