Bounce Message

What is it?

What is it?

A "Bounce Message" is a notification sent to the sender of an email when it cannot be delivered to the recipient's address, detailing the reason for the bounce. This message is crucial for understanding why an email failed to reach its destination and for taking corrective action. Bounce messages help diagnose email delivery issues, such as incorrect email addresses, server problems, or policy restrictions.

Key points to remember

Key points to remember

  • Diagnostic Tool: Bounce messages provide valuable feedback on delivery issues, allowing senders to identify and correct problems.

  • Contains Error Codes: These messages often include specific SMTP error codes that can indicate whether a bounce is hard or soft and the reason for the bounce.


  • Actionable Insights: Analyzing bounce messages can offer insights into improving email practices and list management.


  • Varies by Email System: The format and detail of bounce messages can vary significantly across different email systems.


  • Privacy Considerations: Some systems may limit the information in bounce messages to protect recipient privacy.

Example of Use

Example of Use

  1. Email List Maintenance: Upon receiving a bounce message indicating a non-existent email address, a marketer removes the address from their mailing list.


  2. Troubleshooting Delivery Issues: An IT specialist analyzes bounce messages to resolve a recurring issue with emails being rejected by a specific recipient's email server.

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