Why Deliverability Is Everything
You can write the perfect cold email but none of it matters if it lands in the spam folder. Deliverability is the foundation every successful outbound campaign is built on.
The Deliverability Landscape Has Changed
Google and Microsoft have dramatically tightened their spam filters. New sender requirements, stricter authentication, and AI-powered spam detection mean the bar for reaching the primary inbox is higher than ever.
Domain and Infrastructure Setup
Never send cold emails from your primary domain. Set up separate sending domains with proper SPF, DKIM, and DMARC records configured.
Domain Warming Is Non-Negotiable
New email accounts have no sending reputation. Start with 5-10 emails per day to known contacts. Gradually increase to your target volume over 14-21 days.
Writing for the Inbox
Avoid excessive capitalization, multiple exclamation marks, and spam trigger words. Keep formatting clean with no heavy HTML or large images.
Technical Hygiene
Verify every email address before sending. Hard bounces destroy your sender reputation. Aim for a bounce rate under 2%.
Sending Patterns
Send during business hours in your recipient’s time zone. Space your sends throughout the day rather than blasting everything at once.
The Payoff
Companies that invest in deliverability infrastructure consistently see 2-3x higher response rates than those who skip this step.
