Since there is a ton of information on the community about how to identify and manage records which bounce repeatedly I thought it would help if they were all in one location.
How to Manage Your Marketo Database for Deliverability by Kiersti Esparza
Great tips for identifying records which bounce repeatedly and how to understand the different bounce codes.
Email Bounce Codes
Learn more about the different bounce codes.
Monitoring Email Deliverability: Bounces - Part I by Kristen Carmean
Terrific information about bounces and the main categories: incorrect email address, anti-spam block, technical issues, soft bounces.
Monitoring Email Deliverability: Unengaged Users – Part II by Kristen Carmean
Additional tips for identifying and managing chronic non-responders.
Monitoring Email Deliverability: Troubleshooting High Bounce Rates – Part III by Kristen Carmean
This great article covers troubleshooting some common email deliverability problems, starting with high bounce rates.
Monitoring Email Deliverability: Troubleshooting Spam Blocks – Part IV by Kristen Carmean
Learn more about troubleshooting spam blocks
Example Error Responses by Jason Vincik
Instructions to create a Smart Campaign that sets Email Invalid to True when emails permanently fail.
Data Management Strategies - Managing Chronic Non-responders (never open or click) Part I by Brian Law
Identifying and managing chronic non-responders.
Data Management Strategies – Managing Chronic Non-responders (never open or click) Part II by Brian Law
Smart campaign build instructions.