MailSure

Is 33mail.com a valid email domain?

DisposableChecked 2026-11-06

Mail for 33mail.com is handled by 7 servers at Google (Gmail or Google Workspace), with aspmx.l.google.com tried first.

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

SPF is published and ends with ~all. No DMARC policy was found.

Check an email address at 33mail.com

Type the name before the @ to check a full address. No account needed.

Try an example:

MX records (Google (Gmail or Google Workspace))

PriorityMail serverResolves to
10aspmx.l.google.com74.125.133.26, 2a00:1450:400c:c0c::1a
20alt1.aspmx.l.google.com192.178.213.27, 2a00:1450:4013:c1e::1a
20alt2.aspmx.l.google.com142.251.127.26, 2a00:1450:4010:c22::1a
30aspmx2.googlemail.com192.178.213.26, 2a00:1450:4013:c1e::1b
30aspmx3.googlemail.com142.251.127.27, 2a00:1450:4001:c21::1b
30aspmx4.googlemail.com192.178.228.27, 2404:6800:4000:1027::1a
30aspmx5.googlemail.com142.250.147.27, 2404:6800:4013:813::1b

SPF

Record published

v=spf1 include:email.freshdesk.com include:_spf.google.com ~all

DMARC

No record found

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 33mail.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

33mail.com has no DMARC policy, so receivers have no instruction on what to do with mail that fails authentication. Large mailbox providers now expect bulk senders to publish one.

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Frequently asked questions

Is 33mail.com a valid email domain?
Yes. 33mail.com publishes 7 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
Is 33mail.com a disposable email domain?
Yes. 33mail.com is on our list of disposable and temporary email domains, so most services block it.
What are the MX records for 33mail.com?
aspmx.l.google.com (priority 10); alt1.aspmx.l.google.com (priority 20); alt2.aspmx.l.google.com (priority 20); aspmx2.googlemail.com (priority 30); aspmx3.googlemail.com (priority 30); aspmx4.googlemail.com (priority 30); aspmx5.googlemail.com (priority 30).
Does 33mail.com have SPF and DMARC?
SPF: yes, ending ~all. DMARC: no record found.

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