Email deliverability, monitored — before it breaks.

Scan your domain for SPF, DMARC, and key inbox requirements. Get alerted only when something changes.

Free scan · Read-only · No signup required.

Takes ~2–5s for most domains.

✅ Read-only checks·✅ No email sending·✅ Built for Gmail/Yahoo/Microsoft sender rules (2024+)

Latest scan
example.com
PASSSPF ✓ · DMARC ✓
Alert
Status changed → WARN
We’ll email you when something changes.
WARN
Read-only by design
We don't modify DNS or send email on your behalf. How we check
Alerts only when something changes
Monitoring is quiet until SPF/DMARC/headers drift.
Built for modern inbox expectations
Gmail/Yahoo/Microsoft aligned checks.

How it works

1
Scan your domain
SPF, DMARC & key headers checked in seconds.
2
See what matters
Interpreted summary and fix guidance.
3
Monitor changes
Daily checks and email alerts when something drifts.

Monitoring starts at £9/month (1 domain).

Built for Gmail/Yahoo/Microsoft sender requirements — focused on the checks inbox providers enforce.

What InboxReady checks

SPF & DMARC

Presence, syntax, and enforcement policies inboxes expect.

Policy & alignment

Whether your DMARC policy actually protects your domain.

Headers & unsubscribe

DKIM, List-Unsubscribe, and one-click unsubscribe support.

Learn more: SPF checker · DMARC checker · List-Unsubscribe

Free tools: SPF checker · DMARC checker · Deliverability scan

Start with a live scan

It takes a few seconds and doesn’t modify anything.

No signup or credit card required.