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Is your email getting rejected by Gmail and Yahoo?

Since late 2025, Gmail, Yahoo, and Outlook hard-reject mail from bulk senders that fail SPF, DKIM, and DMARC. If you send over 5,000 messages a day to consumer inboxes, one missing record can bounce your whole campaign. Check your domain in 30 seconds and see exactly what is failing.

No signup. No credit card. Enter a domain, get your grade.

How the check works

  1. Read your public DNS for SPF, DKIM, and DMARC.
  2. Grade A to F with per-record pass and fail.
  3. Show the three things to fix first. Read-only, never sends mail or touches DNS.

What the Gmail and Yahoo rules require

Miss any authentication item and receivers return a hard 550. The message does not arrive at all. This is a refusal, not a spam-folder placement.

  • • SPF published and passing. Receivers use SPF to confirm the sending IP is authorised for your domain.
  • • DKIM signing. DKIM cryptographically signs your mail so receivers can verify it was not altered.
  • • DMARC published (p=none floor). Gmail and Yahoo require a DMARC record to exist for bulk senders. p=none is the accepted minimum.
  • • SPF or DKIM alignment with the From domain. DMARC only passes when SPF or DKIM aligns with the domain in the visible From header.
  • • One-click unsubscribe (opt-outs honored within 2 days). Bulk senders must offer one-click unsubscribe and process opt-outs within two days.

What failing costs

  • × Campaigns bounce. Not flagged as spam, refused outright.
  • × Revenue that flows on the failing domain stops.
  • × Domain reputation degrades the longer it runs.
  • × You find out from customers, not from a dashboard.

Frequently asked

Why am I bouncing when nothing changed on my side?

The rules tightened. Gmail and Yahoo moved from recommending authentication to enforcing it for bulk senders, so a setup that delivered last year can be refused today.

I send under 5,000 a day. Do I still need this?

Yes. The bulk threshold is where rejection becomes guaranteed, but the same SPF, DKIM, and DMARC records drive deliverability and spoofing protection at any volume.

Is p=none enough?

For the bulk-sender rules a published DMARC record at p=none is the accepted floor. It satisfies the requirement to exist, but it is a monitoring policy, not protection. Move toward enforcement when you can.

Does the scan change anything?

No. It is read-only. We read your public DNS records and never send mail or modify anything.

My vendor says they handle all of this.

Many tools and subdomains still fail alignment with your From domain. The check shows you what receivers actually see, regardless of who set it up.

What is free?

One domain, the A to F grade, the per-record checklist, the prioritized fixes, and monitoring on that one domain.

Know where you stand in 30 seconds

No signup. No credit card. Enter a domain, get your grade.

Scan my domain free