Hard Bounce is a permanent email delivery failure, often caused by an invalid or nonexistent address.
Example of Hard Bounce
A receiving server reports that an address does not exist. The platform treats the hard bounce as a reason to stop repeated delivery attempts to that address and the team checks how the invalid address entered the list.
Why Hard Bounce matters
It matters because email is one of the few channels a business can own directly. Strong email fundamentals improve trust, deliverability, segmentation, and long-term lead nurturing.
Related terms
Frequently Asked Question
What does Hard Bounce mean?
Hard Bounce means a permanent email delivery failure, often caused by an invalid or nonexistent address.