Email List Rental vs Purchase

Definition

Email list rental and email list purchase are two methods of acquiring access to third-party subscriber lists, both of which carry significant legal and deliverability risks. Rented lists provide temporary access to send to another company's subscribers, typically on a per-send basis. Purchased lists involve buying a database of email addresses outright. Neither method is compliant with GDPR, CASL or most modern privacy regulations because the subscribers on these lists have not consented to receive emails from your organisation.

Why They Are Problematic

• Consent does not transfer — consent given to one company does not extend to another under GDPR or CASL
• Deliverability damage — sending to unengaged recipients triggers spam complaints and damages sender reputation
• Spam traps — purchased lists often contain spam trap addresses that can permanently blacklist your sending domain
• Low engagement — recipients who never opted in rarely open, click or convert

Best Practices

• Build your list organically through permission-based acquisition methods
• If acquiring another business, migrate subscriber data with proper consent notifications and opt-in confirmation
• Use list rental only in strictly regulated contexts (B2B, CAN-SPAM only) with clear disclosure
• Never purchase email lists from brokers or data vendors under any circumstances
• Audit any third-party list against consent requirements before sending a single message