Politely ask for feedback

It's good to know why somebody decides to leave. Offboarding provides an excellent opportunity to improve user experience and understand what users lack in your product. Avoid being pushy by making the feedback page mandatory. Instead, make users feel their feedback is valuable to you and that you respect their choice.

You can provide possible reasons for leaving and offer an empty input for those users who would like to share their thoughts on how the product can be improved or what they didn't like while using it.