We have the best customers! We recently sent out a survey about possible upcoming products to our previous customers. We have an almost 10% response rate within the first 24 hours, with just one email. Given summer vacation schedules and how old some of the email addresses were (pretty much unscreened), I'm so impressed! If you didn't get a survey invite but want to take it, here's the link!
https://www.surveymonkey.com/s/sleepphones