Why was our recipient email addresses added to the bounce list?

why did it happen and how can we prevent this in the future? We were just removed from the bounce list by jotform with from our previous ticket today.

There are several different reasons why an email address may get added to the bounce list. It can be due to the recipient's inbox being full, the email address is inactive, or if your email server is unavailable. It can also be due to the email server rejecting the email due to suspected spam.

In case an email address gets added to the bounce list, you can check it on your end by following this guide: How to Remove Your Email Address from Bounce List. To prevent further bouncing issues, please see our guide here: How to Prevent Email Bouncing Related Issues.

Please let us know if you need further assistance.
Regards.