Free Download30-Point Email Deliverability
30-Point Email Deliverability
Audit Checklist
The exact checklist used by 2,000+ email senders to diagnose and fix inbox placement issues. Covers authentication, reputation, list hygiene, and current Gmail, Yahoo, and Outlook bulk-sender mandates.
Want the explanation behind each item? Read the complete checklist guide →
What's inside (6 categories, 30 checks)
- 🔐Authentication — 5 checks
- ⭐Sender Reputation — 5 checks
- 🧹List Hygiene — 5 checks
- 📤Sending Practices — 5 checks
- 📧Content & Engagement — 5 checks
- 🚨Mailbox Provider Mandates — 5 checks
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You're in! Work through the checklist below, then scroll down to see how to monitor these automatically.
🔐Authentication
- SPF record published and includes all sending sources
- DKIM keys configured for all sending domains
- DMARC policy set to at least p=quarantine
- DMARC aggregate reports (rua) routing to a monitored inbox
- BIMI record set up with VMC or CMC (if applicable)
⭐Sender Reputation
- Google Postmaster v2 Compliance Dashboard shows no failures
- IP reputation checked against Spamhaus, Barracuda, and URIBL
- Not listed on any major email blacklists
- Spam complaint rate below 0.10% in Google Postmaster Tools
- Dedicated sending IP warmed up properly (if applicable)
🧹List Hygiene
- Double opt-in enabled (or explicit single opt-in with clear consent)
- Hard bounces suppressed after first occurrence
- Soft bounces suppressed after 3–5 occurrences
- Spam complainers unsubscribed immediately
- Inactive subscribers segmented and sunset after 90–180 days
📤Sending Practices
- Consistent sending schedule established (no sudden volume spikes)
- Engagement-based segmentation: active subscribers sent most frequently
- Unsubscribe requests processed within 2 business days (Gmail/Yahoo requirement)
- List-Unsubscribe header present in all campaigns
- From name and address consistent and recognizable
📧Content & Engagement
- Subject lines avoid spam trigger words (free, urgent, !!!)
- Text-to-image ratio at least 60% text
- All links use your sending domain (no URL shorteners in transactional)
- Open rate above 20% on engaged segments
- Click-to-open rate (CTOR) above 8%
🚨Mailbox Provider Mandates
- One-click unsubscribe uses RFC 8058 POST method (not just a link)
- Unsubscribe requests processed within 2 business days (Gmail/Yahoo requirement)
- Microsoft SNDS set up and monitored alongside Google Postmaster Tools
- DMARC policy progressing toward p=quarantine or p=reject (p=none flagged as risk)
- Spam complaint rate monitored in Postmaster Tools — warning at 0.10%, block at 0.30%
Now monitor all 30 points automatically.
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