The post-purchase email. Another perfect opportunity to send a survey to your subscribers is after a purchase.In a post-purchase survey email, ask subscribers what they think of your product or service.You can also find customers who may be willing to give you a positive review or a testimonial. Be sure to collect their email address in the survey as well – if someone shares positive feedback, you’ll be able to reach out to them to get a testimonial or review.

Source: The 4 Survey Emails That’ll Get Answers to Your Most Pressing Questions | AWeber Email Marketing