The best cold email in the world is worthless if it lands in spam. Email deliverability is the invisible infrastructure of every outreach business — here's the complete setup with Warmy.
The setup checklist
- Authenticate your domain: SPF, DKIM, and DMARC records. Your email provider has step-by-step docs; it's 20 minutes.
- Use a separate domain. Register a variation (getacme.com instead of acme.com) for cold outreach — protect your main domain's reputation.
- Warm the inbox. Warmy gradually ramps up your sending volume with real mailbox interactions for 2–3 weeks before you send campaign one.
- Send like a human: max 20–30 emails/day per inbox, plain text, minimal links, no attachments.
- Monitor weekly: spam rate under 0.1%, bounce rate under 2%. If either spikes, pause and diagnose before your domain pays for it.
The campaign rules that keep you out of spam
- Personalize the first line — real triggers, not {FirstName} tokens with fake context
- Never buy scraped lists — clean data from providers like Datolock costs less than a burned domain
- Unsubscribe honestly — suppress complainers immediately
- Reply to your replies fast — engagement (positive and negative) helps deliverability
How to make money with it
- Make money online: every outreach channel — affiliate offers, services, partnerships — starts in the inbox
- Help your existing business: if your regular email goes to spam, you're losing invoices you don't even know about
- Offer it as a service: "deliverability setup" for small businesses — a fixed $300–$500 setup plus Warmy management is an easy recurring add-on for any agency