HTC recently sent out an email to registered owners offering free headphones and a $100 credit for a direct purchase or a $100 credit if purchased elsewhere, the terms appear to only include purchases from this month(8/1/2016-8/31/2016) however I was able to enter my information for a phone purchased on launch day and wasn’t immediately denied so trying can’t hurt. see the screenshot attached and checkout the form here.

HTC email august

HTC august email.