Email Deliverability Report
Updated Apr 1, 2026
GitHub
Domain: github.com
GitHub uses DMARC monitoring mode for notifications and security alerts.
Overall Email Deliverability Grade
Good email deliverability practices
Email Service Provider
In-house
IP Type
shared IP
Blacklist Status
Clean
Industry
saas
Email Authentication Setup
SPF
Configuredv=spf1 include:sendgrid.net ~all
DKIM
ConfiguredDKIM for github.com
DMARC
Configuredp=none; rua=mailto:dmarc-reports@github.com
Policy: none
DMARC Policy: NONE
Monitoring only. No action is taken on failing emails, but reports are sent to help identify authentication issues.
BIMI & Brand Trust Signals
BIMI Record
Not currently using BIMI. This feature displays your brand logo next to emails in Gmail and other providers that support it.
VMC Verification
VMC verification not currently in use for additional brand trust.
Sending Infrastructure
Email Service Provider
In-house
Operates their own email sending infrastructure for maximum control and deliverability.
IP Configuration
shared IP Address
Shares IP infrastructure. Reputation depends on shared pool behavior, but simplifies management.
Blacklist Status
Not Listed on Major Blacklists
GitHub maintains a clean reputation across major DNS-based blacklist providers. Emails are not being blocked based on IP or domain reputation.
Key Takeaways
GitHub takes email deliverability seriously with a Grade B authentication setup.
DMARC policy set to none shows a proactive approach to brand protection.
Using shared sending infrastructure shows a preference for simplified email operations.
Monitor Your Domain Like GitHub
InboxEagle automatically monitors your SPF, DKIM, DMARC, and BIMI records, alerts you to issues, and provides actionable guidance to improve your email deliverability.
Start Your Free Trial