A bounce, is an email that is returned because it cannot be delivered for some reason. When an email cannot be delivered it ‘bounces’ back to the sender (hence the term ‘bounce’).
In general we can make a distinction between two kinds of bounced emails. Where possible CheckMarket will provide the exact bounce reason for both types of bounces so you know whether to correct the contact and resend the invitation or to remove the email address entirely, from both the survey and your own database.
CheckMarket only reports permanent and transient bounces that will no longer be retried by our email engine. In other words, your recipient did not receive your email message, and we will not try to resend it.