A sunset policy is a written rule for when you stop emailing contacts who no longer engage. For example: “Anyone with no click or purchase in nine months receives a two-email re-engagement series; those who still don’t respond are unsubscribed.” It turns list cleaning from an occasional panic into a routine that runs on its own.
The right threshold depends on how often you send and how people buy. A daily-deals store might sunset after three months of silence; a furniture brand, whose customers buy rarely, might wait a year; a B2B firm with long sales cycles might wait longer still but email those contacts less often. Base the rule on reliable actions such as clicks, orders, replies or logins, not opens alone.
Sunsetting usually happens in stages. First reduce frequency for people who are going quiet. Then run a re-engagement attempt. Then stop marketing email to those who don’t respond, either by unsubscribing them or moving them to a suppressed state. Keep their consent and suppression records, so they aren’t re-imported by accident.
The benefits are concrete: better inbox placement because a higher share of recipients engage, fewer recycled spam traps, lower complaint rates and lower costs on contact-based pricing. Under India’s DPDP Act, keeping personal data only as long as it serves its purpose is also good practice, so a sunset policy often pairs with a data retention rule.
A Jaipur home-furnishings brand adopts a sunset rule: no click or order in 270 days triggers a “Still interested?” series. After two emails and ten days, non-responders are tagged “sunset” and unsubscribed. Contacts with no activity for 24 months are deleted under its retention rule.
MailNesto’s Win back inactive recipe tags non-responders “sunset” and unsubscribes them, and its privacy settings can delete contacts after a set number of months without activity.