# What should I do when an email is rejected with a permanent bounce?

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HELP CENTER · FAQ Mail 1 min read
# What should I do when an email is rejected with a permanent bounce?
A permanent bounce means the receiving system reported that the message could not be delivered under the conditions of that attempt. Read the diagnostic code and text first; do not keep retrying an address that is invalid or a message the recipient system explicitly rejects.
IaGenify
Mail

## Classify the rejection
Separate invalid-recipient responses from policy, authentication, content, and size rejections. The response may come from the recipient server or an intermediate gateway, so preserve the full diagnostic and timestamp when investigating.
Check the relevant control: recipient spelling and mailbox status for address errors, sender authentication and domain alignment for policy responses, and message format or attachment constraints for content or size issues.
## Correct and retry selectively
Fix the underlying cause before sending again. Retry transient service or rate-limit responses with an appropriate delay, but suppress a confirmed invalid address unless the recipient provides a corrected one.
Track bounce categories and rates over time without retaining unnecessary message content. If many recipients at one domain reject mail, investigate the shared sender configuration or reputation signal rather than repeatedly resending individual messages. [← Back to Mail FAQs](https://help.iagenify.com/faqs/mail)