Can Harbor improve email deliverability?

Yes. Harbor focuses on authentication health and enforcement readiness so legitimate mail is more likely to land in inboxes while fraudulent traffic is easier to identify.

Harbor iOS + Android — Coming Soon

DMARC management for stronger deliverability and domain protection.

Q: What does Harbor help with?

Harbor helps with DMARC management, SPF and DKIM alignment, aggregate report visibility, policy rollout guidance, and deliverability-focused domain protection.

Q: Is Harbor available today?

NHMOhio.com is fully live today. Harbor for iOS and Android is coming soon. Sign up to be notified once the app is released.

Harbor is the upcoming iOS and Android DMARC management app from NHM Ohio. Sign up to be notified as soon as the app is released.

Request Early Access Visit NHM Ohio

DMARC: Monitoring & enforcement
SPF: Alignment & SPF flattening
DKIM: Rotation & validation
BIMI: Readiness guidance

What Harbor does

Everything you need to manage DMARC, end to end.

From first report to enforced policy — Harbor gives your team the visibility and guidance to move forward with confidence.

DMARC monitoring & reporting

Decode aggregate and forensic reports. Surface unauthorized senders before they damage your brand.

SPF & DKIM alignment

Keep every sending source aligned so legitimate mail passes authentication and reaches the inbox.

Deliverability improvement

Strengthen sender reputation and policy confidence to keep critical business email out of spam.

Spoofing & phishing defense

Move from monitoring to enforcement with a practical roadmap that protects your domain and customers.

Outcomes

Core outcomes for your team

Better inbox placement for legitimate sending domains
Clear visibility into DMARC failures and unauthorized traffic
Faster alignment of SPF, DKIM, and domain authentication policies
Reduced risk of domain impersonation and phishing abuse

How it works

A guided path from monitoring to enforcement.

01
Discover
Connect your domains, ingest DMARC reports, and baseline your authentication posture.
02
Align
Identify unaligned senders and tighten SPF, DKIM, and DMARC with guided recommendations.
03
Enforce
Move to p=quarantine and p=reject with confidence, backed by clear reporting and alerts.

FAQ

Frequently asked questions

What does Harbor help with?

Harbor supports DMARC management, SPF and DKIM alignment, report visibility, and a phased path to stronger policy enforcement.

Can Harbor improve deliverability?

Yes. By improving authentication health and sender trust, Harbor helps legitimate messages reach inboxes more consistently.

Is Harbor available now?

NHMOhio.com is fully up and functional today. Harbor for iOS and Android is coming soon — sign up to be notified when the app is released.

Get notified when Harbor launches

Harbor iOS and Android apps are coming soon. Enter your email and we will notify you as soon as they are released.

In the meantime, create your account on nhmohio.com/register to start using these tools on the web.