How to Clean Invalid Emails and Protect Your Email Deliverability

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Businesses accumulate data debt over time, including outdated or invalid user email addresses that can harm email deliverability and sender reputation. A practical approach involves sending a policy-update email announcing a 12-month inactivity deletion policy, which simultaneously helps identify bounced or invalid addresses. Bounce reports from this campaign can be exported to flag users with bad emails, who can then be permanently deleted if also inactive. Active users with invalid emails should be prompted through in-app notifications or embedded verification links to update their contact details. Keeping email lists clean improves delivery rates, reduces spam risk, and ensures compliance with data privacy standards.

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