Deliverability Score
The deliverability score is a 0-100 rating that predicts how likely your emails are to reach the inbox.
Score Grades
Scores are grouped into grades to help you quickly understand your email health:
Excellent deliverability. Your emails are highly likely to reach the inbox across all major providers.
Good deliverability. Most emails will reach the inbox, but there is room for improvement.
Fair deliverability. Some emails may land in spam. Review the recommendations to improve.
Poor deliverability. Many emails are likely going to spam. Immediate action recommended.
Critical issues. Most emails will not reach the inbox. Address all recommendations urgently.
How the Score is Calculated
The score is based on multiple weighted factors:
| Factor | Weight | Description |
|---|---|---|
| SPF | 15% | Sender Policy Framework authentication |
| DKIM | 20% | DomainKeys Identified Mail signature |
| DMARC | 15% | Domain-based Message Authentication |
| Inbox Placement | 30% | Actual delivery to inbox vs spam across providers |
| Spam Score | 20% | Content analysis for spam indicators |
Authentication Results
Each authentication check can return one of these results:
Authentication successful. The email passed this check.
Authentication failed. The email did not pass this check.
Weak failure. The domain owner has indicated the message is suspicious but not outright fraudulent.
No policy defined or no assertion can be made about the message.
Inbox Placement
We test actual delivery across major email providers:
Google Workspace & Gmail
Microsoft 365 & Outlook.com
Yahoo Mail & AOL
Each provider reports one of: inbox, spam, or not_received.
Improving Your Score
Each test result includes actionable recommendations. Common improvements include:
- Configure SPF, DKIM, and DMARC for your sending domain
- Align your From address with your authenticated domain
- Avoid spam trigger words and excessive links in content
- Maintain consistent sending patterns and warm up new domains