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Deliverability Letter

Data Retention

Also known as: Data Retention Policy, Retention Period

How long you keep customer and email data before you delete it. It sets clear rules for when you remove or anonymize contact and activity data so you only hold what you actually need.

Data retention is the plan for how long you keep customer and email data. It covers things like contacts, events, and purchase records. You decide what stays, what gets deleted, and when. The goal is to keep useful data without holding onto it forever.

Good data retention helps you respect privacy and stay within the law. It also keeps your email lists cleaner, which can help deliverability and reporting. When old or inactive contacts are removed on a schedule, you see more accurate open and click rates. Your team also has less clutter to work through.

Start simple with a few clear rules. For example, keep unsubscribed contacts only long enough to honor suppression lists, and remove inactive contacts after a set period. Write these rules down so your whole team follows the same approach. If your business or laws change, adjust the rules and update your tools.