MailSure

Is lastpass.com a valid email domain?

Organisation domainChecked 2026-11-06

lastpass.com has working mail routing: 1 MX record pointing to Microsoft (Outlook or Microsoft 365), led by lastpass-com.mail.protection.outlook.com.

It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.

SPF is published. DMARC is set to reject.

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MX records (Microsoft (Outlook or Microsoft 365))

PriorityMail serverResolves to
0lastpass-com.mail.protection.outlook.com52.101.41.183, 52.101.202.156

SPF

Record published

v=spf1 redirect=lastpass.com.hosted.spf-report.com

DMARC

Policy: reject

v=DMARC1; p=reject; sp=reject; rua=mailto:3b91c1c0@mxtoolbox.dmarc-report.com,mailto:dmarc_agg@vali.email,mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:3b91c1c0@forensics.dmarc-report.com,mailto:lastpass-dmarc@datafeeds.phishlabs.com,mailto:dmarc_ruf@emaildefense.proofpoint.com; adkim=r; aspf=r; fo=1; rf=afrf; pct=100; ri=86400

Disposable?

No, not on our disposable list.

Free provider?

No, not a known free provider.

What this means for your email list

What this means for addresses at this domain

Mail routing for lastpass.com is healthy, so the domain is not the risk. The risk is the mailbox: outdated contacts, shared inboxes and catch-all servers. A mailbox-level check tells you which addresses are safe to send to.

Sender authentication

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

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Frequently asked questions

Is lastpass.com a valid email domain?
Yes. lastpass.com publishes 1 MX record and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
Is lastpass.com a disposable email domain?
No. lastpass.com is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
What are the MX records for lastpass.com?
lastpass-com.mail.protection.outlook.com (priority 0).
Does lastpass.com have SPF and DMARC?
SPF: yes. DMARC: yes, policy reject.

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