The Complete Email Deliverability Checklist (2025)

If you're sending emails, you're building a reputation. Every campaign you send either builds trust with ISPs or raises red flags that can get you blocked. A strong deliverability strategy isn't a "nice-to-have"—it's the foundation of successful email marketing.

This checklist is your roadmap. We've broken down the complex world of deliverability into six actionable steps, from the essential technical setup to long-term monitoring. Stop guessing and start implementing the proven practices that keep you out of the spam folder.

What You'll Learn Inside:

• The Technical Foundation: Configure your domain's "official passport". We'll walk you through setting up SPF, DKIM, and DMARC to prove your emails are legitimate and haven't been tampered with.
• Domain & IP Warmup: You can't just blast 50,000 emails from a new domain. Learn the correct method to build a positive sending reputation over time by starting small and increasing your volume slowly and consistently.
• List Hygiene Essentials: A clean email list is the single most important factor for long-term deliverability. Discover the importance of using a double opt-in, validating leads in real-time, and regularly cleaning hard-bounced addresses from your list.
• Content That Delivers: Even with a perfect setup, your email's content can trigger spam filters. Learn to avoid common spam trigger words, maintain a healthy text-to-image ratio, and provide a clear one-click unsubscribe link.
• Mastering Engagement Signals: ISPs prioritize emails that recipients want. We show you how to segment your most active users and run re-engagement campaigns to generate positive signals and keep your list healthy.
• Proactive Monitoring: Deliverability isn't "set it and forget it". Learn how to use tools like Google Postmaster Tools, check for blacklists, and keep your spam complaint rate safely below 0.1%.