Email Deliverability: A Practical Guide
Learn the principles, infrastructure and review process behind responsible outbound.
Delivery vs deliverability
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Sender reputation
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Domain reputation
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
IP reputation
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
SPF
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
DKIM
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
DMARC
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
MX records
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Reverse DNS
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
Tracking domains
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Link reputation
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Spam traps
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
Blocklists
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Hard and soft bounces
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Complaint rate
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
Unsubscribe
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Engagement
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Sending volume
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
Sending consistency
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
New domains
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Inbox providers
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
Gmail
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Microsoft
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Yahoo
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
SMTP
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Email verification
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Suppression
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
Monitoring
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Diagnosing problems
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
Header analysis
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.
Recommended checklist
Every stage should preserve relevance, transparency and control. Document criteria, honor opt-outs and evaluate results without absolute promises.
Common myths
Use professional data appropriate to the purpose, minimize collection and confirm the legal requirements that apply to your organization.
FAQ
Infrastructure quality and consistent sending behavior matter more than shortcuts or uncontrolled volume.