What Is One-Click Unsubscribe and Why Is It Required?
One-click unsubscribe (RFC 8058) is required by Gmail and Yahoo for bulk senders. Learn how to implement List-Unsubscribe headers correctly.
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The legal side of sending: CAN-SPAM, GDPR, consent, unsubscribe mechanics and the physical-address rule. For marketers and product teams who need to know what the law actually requires of commercial and transactional email.
One-click unsubscribe (RFC 8058) is required by Gmail and Yahoo for bulk senders. Learn how to implement List-Unsubscribe headers correctly.
Read more →Pure transactional emails do not require unsubscribe under CAN-SPAM. Mixed content and high-volume senders should still include account options.
Read more →CAN-SPAM requires sender ID, physical address, honest subjects, and working unsubscribe for commercial email. Penalties up to $51,744 per email.
Read more →GDPR requires explicit consent before marketing to EU residents. Unlike CAN-SPAM, you cannot email without prior permission.
Read more →Consent requirements vary by region: GDPR requires opt-in, CAN-SPAM allows opt-out, CASL requires express or implied consent.
Read more →Yes, CAN-SPAM requires a physical postal address in commercial email. Can be street address, PO Box, or registered private mailbox.
Read more →CAN-SPAM requires processing within 10 days. Gmail/Yahoo require one-click unsubscribe headers for bulk senders.
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