MailSure

Is mailinator.com a valid email domain?

DisposableChecked 2026-11-06

mailinator.com can receive email. It publishes 2 mail servers, and the first choice is mail.mailinator.com.

It appears on our list of disposable and throwaway email domains.

SPF is published and ends with -all. DMARC is set to reject.

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MX records

PriorityMail serverResolves to
1mail.mailinator.com23.239.11.30
1mail2.mailinator.com45.33.83.75

SPF

Record published

v=spf1 -all

DMARC

Policy: reject

v=DMARC1;p=reject;sp=reject;aspf=s;pct=100

Disposable?

Yes, listed as a disposable email domain.

Free provider?

Yes, a free public mailbox provider.

What this means for your email list

Should you accept addresses at this domain?

Probably not. Throwaway services like mailinator.com give out inboxes that people abandon within minutes, so a signup with this domain rarely turns into a customer. Blocking it at the form keeps fake accounts and wasted emails out of your list.

Sender authentication

mailinator.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as mailinator.com must have SPF and DKIM set up correctly.

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Frequently asked questions

Is mailinator.com a valid email domain?
Yes. mailinator.com publishes 2 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
Is mailinator.com a disposable email domain?
Yes. mailinator.com is on our list of disposable and temporary email domains, so most services block it.
What are the MX records for mailinator.com?
mail.mailinator.com (priority 1); mail2.mailinator.com (priority 1).
Does mailinator.com have SPF and DMARC?
SPF: yes, ending -all. DMARC: yes, policy reject.

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