Gmail & Yahoo Bulk Sender Check — Free & Instant

About this tool. Since February 2024 Gmail and Yahoo refuse mail from bulk senders that are not authenticated. This checks the parts of their requirements that live in DNS: SPF, DKIM on the common selectors, and a published DMARC policy. It also names the two requirements nothing can check from outside, so you know what is left to confirm yourself.

Knowing your policy is one thing. Knowing who is using it is another.

Meeting the bar is not the same as being protected. Google accepts a DMARC record set to p=none, which satisfies the requirement and instructs receivers to do nothing about anybody forging you.

Every server sending as your domain, grouped by sender rather than listed by IP
What passes and what fails, so you can move to enforcement without breaking real mail
A note when something new starts sending as you
One domain, $9 a month, billed monthly and cancel anytime

See DMARC Monitoring

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Publish one TXT record. Nothing to install.

How to read your bulk sender results

Gmail and Yahoo drew the line in February 2024. Send more than about 5,000 messages a day to their users without authentication and the mail is rejected rather than filtered, which is a harder failure than landing in spam.
SPF and DKIM are both required, not either. A domain passing one and failing the other does not meet the bar.
A published DMARC record is the third requirement, and p=none satisfies it. That is worth understanding rather than celebrating: it clears Google's bar while instructing receivers to do nothing about anyone forging you.
We probe the common DKIM selectors used by the major providers. A key on a private selector is real and we will not find it, so check that one directly rather than assuming it is missing.
Two requirements cannot be checked from outside at all, and we name them rather than passing you silently. One-click unsubscribe lives in the message headers, and your spam complaint rate lives in Google Postmaster Tools.

Common problems and how to fix them

No DMARC record

This is the requirement most senders fail, and the cheapest to fix. Publish a TXT record at _dmarc.yourdomain with v=DMARC1; p=none; rua=mailto:you@yourdomain and you meet the bar the same day.

DKIM not found on any common selector

Your mail platform generates the key and tells you the selector. If you send through more than one platform, each needs its own, and each needs publishing before that platform's mail is signed.

Everything passes and mail is still rejected

The two we cannot see are the likely cause. Send yourself a campaign and confirm List-Unsubscribe and List-Unsubscribe-Post are on it, then check the complaint rate in Postmaster Tools. Above 0.3% and nothing else matters.

You send far less than 5,000 a day

The requirements are aimed at bulk senders, but the same signals decide whether ordinary business mail is trusted. Meeting them is worth doing at any volume.

DMARC Check SPF Check DKIM Check BIMI Check Full email checkup

Common questions.

What are the Gmail and Yahoo bulk sender requirements?

Since February 2024 both require SPF and DKIM on your sending domain, a published DMARC policy, alignment between the From domain and whichever of SPF or DKIM passes, one-click unsubscribe on marketing mail, and a spam complaint rate below 0.3%. Bulk means roughly 5,000 messages a day to their users.

Does p=none meet the DMARC requirement?

Yes. A published record with p=none satisfies Gmail and Yahoo, and protects nobody from forging your domain. Treat it as the starting line rather than the finish.

Do the requirements apply if I send less than 5,000 a day?

The formal thresholds do not, but the signals are the same ones every receiving server weighs. A small business with no SPF record still lands in spam; it simply gets filtered rather than rejected.

Why can you not check one-click unsubscribe?

It is a pair of headers on the message itself, List-Unsubscribe and List-Unsubscribe-Post, and nothing about it is published in DNS. Send yourself a copy of a campaign and read the raw headers, or paste them into the header analyzer.

What counts as alignment?

The domain in the From address a human sees has to match the domain that SPF or DKIM validated. Mail that passes SPF for a sending platform's own domain but shows your domain in From is not aligned and does not count.