Get into the inbox: authentication, hygiene, and warm-up

If your email lands in spam, nothing else matters. Authenticate your domain, honor the current Gmail/Yahoo bulk-sender rules, and keep your spam rate under 0.3% (aim under 0.1%).

Deliverability is the invisible foundation of email marketing: a great campaign in the spam folder earns nothing. Gmail and Yahoo's bulk-sender rules (for senders at 5,000+ messages/day) require SPF, DKIM, and DMARC, one-click unsubscribe, and a Postmaster spam-complaint rate under 0.3%. AI can order your fix list from your current setup; you confirm the current rules and your Postmaster numbers.