# 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:

![](/files/w0U2AbgRBaGsJTIanY85)

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.


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