DKIM, SPF & DMARC Done Right
Email authentication is the foundation of deliverability. We handle the complexity so your emails land in the inbox.
Try 1000 Free Credits →Complete authentication coverage
DKIM Signing
Automatic DKIM signing for every email. We generate and manage your cryptographic keys, ensuring recipients can verify your messages are authentic and unaltered.
SPF Management
We provide the correct SPF include records and help you configure them. Our infrastructure is always up to date, so your SPF alignment stays valid.
DMARC Alignment
Full DMARC alignment with both SPF and DKIM. Custom MAIL FROM domains ensure your authentication passes the strictest DMARC policies.
We set it up for you
Our delivery experts walk you through every step of the authentication process, ensuring perfect configuration.
Domain Verification
We verify ownership of your sending domain and assess your current authentication setup.
DKIM Key Generation
We generate DKIM keys for your domain and provide the DNS records you need to publish.
SPF Configuration
We update your SPF record to include OutboundSMTP servers, staying within the 10-lookup limit.
DMARC Alignment
We configure custom MAIL FROM domains and verify full DMARC alignment with your policy.
Validation & Monitoring
We test your authentication end-to-end and set up ongoing monitoring to catch any issues.
Why authentication matters
Inbox Placement
Properly authenticated emails are far more likely to reach the inbox. Major providers like Google and Microsoft require authentication.
Brand Protection
DMARC prevents domain spoofing and phishing. Protect your brand reputation by ensuring only authorized senders use your domain.
Compliance
Many industries require email authentication for compliance. Our implementation satisfies requirements for GDPR, HIPAA, and PCI DSS.
Sending Reputation
Authentication builds trust with mailbox providers over time. A strong authentication record improves your sender reputation score.
Visibility
With DMARC reporting, you gain visibility into who is sending email on behalf of your domain, legitimate or not.
Deliverability
End-to-end authentication alignment means fewer bounces, fewer spam folder placements, and higher overall deliverability.
Authentication questions
Do I need to manage DKIM keys myself?
No. We generate and manage your DKIM keys automatically. You only need to publish the DNS records we provide. We handle key rotation and can assist with multi-domain setups.
Will OutboundSMTP work with my existing DMARC policy?
Yes. We support DMARC alignment via both SPF and DKIM. With custom MAIL FROM domains, your messages pass even strict DMARC policies (p=reject). Our team verifies alignment before you go live.
What if I already have SPF records from other providers?
We work within your existing SPF record by adding an include mechanism. Our team ensures your SPF stays within the 10-lookup limit and helps optimize if you are approaching the maximum.
Get authenticated in minutes
Our experts set up DKIM, SPF, and DMARC for you. Start with 1,000 free credits.