# How does Mailblast handle bounces?

Mailblast processes bounce/complaint notifications through Amazon SNS. \
Hard bounces and emails marked as spam are automatically filtered in your list, and subscribers will no longer receive emails for future campaigns.

You can see detailed bounce/spam information in each campaigns report:

![](https://3747798111-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOLiZFb8QcPSjvrne1vkm%2Fuploads%2F1rZdsMgsbWfhvNbRuj6T%2Fbounces1.png?alt=media\&token=9d434321-163b-485d-b025-d0c5c46fb6ef)

Note soft bounced recipients are still considered active accounts and are not filtered out in new campaign deliveries. Mailblast will automatically convert subscribers who soft bounce at least 3 times in a 4 week window into hard bounces.

Read  [Amazon SES best practices](https://media.amazonwebservices.com/AWS_Amazon_SES_Best_Practices.pdf) for further information.