Domain Intelligence
Last Updated:
Hushmail.com
Safe to Send
Hushmail.com is operated by Hush Communications. The domain runs 2 mail exchanges and SMTP is responsive, with 2 of 3 authentication standards in place.
Safe to Send
RISK
27
/100
Low
Verify Mailbox
Verify @hushmail.com emails
Live SMTP handshake against hushmail.com mail servers. No email is sent. 10 free per day, no signup.
Trusted by 400,000+ senders
4.9/5
From 8,500+ verified reviews
Reached out to support during our API integration last month. Response in under 15 minutes, the rep was so sharp and helpful that by the end of the thread it honestly felt like I was flirting with him. Amazing support team. A+++. Nathan Orozco · Lead Engineer · via X
SOC 2 Type II
GDPR
CCPA
99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
Yes
Mail server responds to SMTP handshake
MX Records
2
Mail exchangers
Mail Exchange (MX) Records for hushmail.com Mail Exchange records. They tell other mail servers which hosts are responsible for receiving email at this domain, in priority order. Lower priority numbers are tried first.
#100
plsmtp1.hushmail.com 72.51.60.134
Reachable
#100
plsmtp2.hushmail.com 72.51.60.133
Reachable
SMTP Handshake
Simple Mail Transfer Protocol. We open a live SMTP connection to the primary MX and read the greeting banner. A response confirms the mail server is alive and accepting connections.
Responsive
BANNER220 prox1a-smtp3.hushmail.com ESMTP ready
Primary mail server accepted SMTP connection and returned a banner during the live audit.
hushmail.com Email Authentication SPF · DKIM · DMARC
SPF
Sender Policy Framework. A DNS record listing which servers are allowed to send mail for this domain. Receivers reject or flag mail from unauthorized servers.
Pass
TXTv=spf1 include:4429584.spf01.hubspotemail.net ip4:65.39.178.0/24 ip4:64.69.70.192/28 -all
Authorized senders are defined and pass SPF policy.
DKIM
DomainKeys Identified Mail. The sending server cryptographically signs outbound mail with a private key, and receivers verify the signature using a public key in DNS.
Missing
No DKIM signature detected on common selectors for hushmail.com.
No DKIM signature was detected. Receivers cannot verify the integrity of outbound mail.
DMARC
Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject.
Quarantine
TXTv=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc-rua@hushmail.com
Receivers are instructed to quarantine (route to spam) any mail that fails SPF or DKIM.
hushmail.com Domain Registration WHOIS · Nameservers · Registrar
RegistrarTUCOWS.COM, CO.
IANA ID69
RegisteredJune 14, 1998
Last UpdatedApril 22, 2026
ExpiresJune 13, 2026
Age27 years
TLD.com
Authoritative Nameservers (2)
- ns0003.secondary.cloudflare.com
- ns0132.secondary.cloudflare.com
Registrant
Hidden by registrar privacy service
About this Domain
About hushmail.com
hushmail.com is a privacy-focused email service from Hush Communications Corporation, based in Vancouver, Canada. Founded in 1999, Hushmail provides encrypted email with built-in OpenPGP and HIPAA-compliant plans for healthcare professionals and lawyers.
hushmail.com implements SPF, DKIM, and DMARC for outbound email. As a privacy-focused provider, Hushmail encrypts messages at rest and in transit. The service complies with Canadian PIPEDA and offers HIPAA-compliant plans.
The hushmail.com mail servers validate recipients and reject invalid mailboxes. The domain does not operate as catch-all. Careful filtering protects the privacy-conscious user base.
For delivery to hushmail.com, authenticate with SPF, DKIM, and DMARC. Hushmail users are security-conscious professionals. Well-authenticated messages perform best.
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Common Questions About hushmail.com
Is hushmail.com a disposable or temporary email provider?
No. hushmail.com is not a disposable email provider. It is classified as Free Email Provider operated by Hush Communications and addresses on hushmail.com are persistent rather than throwaway. Mail sent to a valid hushmail.com mailbox reaches a real recipient.
How do I verify if a hushmail.com email address is valid?
The fastest way to verify a hushmail.com email address is to use our free email checker. Enter any @hushmail.com mailbox at the top of this page and our system performs a real-time SMTP handshake against hushmail.com's mail servers, confirming whether the mailbox exists, is reachable, and is safe to send to. No email is ever delivered during the check.
Can I check if a hushmail.com email exists without sending a message?
Yes. Our real-time email verification API connects directly to hushmail.com's mail server, opens an SMTP session, and queries the mailbox using the RCPT TO command without ever transmitting an actual email. The server's response confirms whether the hushmail.com mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for hushmail.com?
hushmail.com currently publishes 2 mail exchange (MX) records. The primary MX is plsmtp1.hushmail.com, which is the first server contacted when other mail systems try to deliver email to a hushmail.com address. The full list with priorities and IP addresses is in the MX Records panel above. MX records tell sending servers where to route email for hushmail.com.
Does hushmail.com use SPF, DKIM, and DMARC email authentication?
hushmail.com has 2 of the 3 standard email authentication records in place: SPF, and DMARC (policy: quarantine). Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate hushmail.com mail.
Why do emails to hushmail.com bounce or get blocked?
Bounces from hushmail.com usually fall into three buckets: the mailbox doesn't exist (5xx user unknown), the inbox is full, or your sending domain isn't authenticated to hushmail.com's satisfaction. The fastest fix is to run each address through a free email verifier before you send, and to make sure your own SPF, DKIM, and DMARC are configured correctly so hushmail.com's receivers trust you.
How can I verify a large list of hushmail.com email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of hushmail.com addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, hushmail.com catch-all detection, role-account detection, and disposable-domain matching. Results typically come back within minutes and previously-failed addresses on your blacklist are reprocessed for free. For continuous high-volume needs, see our unlimited email verification API.
Is it safe to accept signups from hushmail.com email addresses?
Yes, with normal hygiene. hushmail.com is a legitimate email service and signups from @hushmail.com behave like any other real user. Pipe each address through a real-time email verifier API at the moment of signup to catch typos and dead mailboxes, but there is no need to block hushmail.com by default.
What email format does hushmail.com use for usernames?
Most hushmail.com mailboxes follow common patterns like first.last@hushmail.com, firstinitiallast@hushmail.com, or first@hushmail.com, but the actual local-part rules depend on Hush Communications. The only reliable way to confirm whether a specific @hushmail.com address exists is to run it through a free email verification tool. Guessing patterns will produce a high bounce rate and damage your sender reputation.
How is the hushmail.com risk score calculated?
The 0-to-100 risk score for hushmail.com combines disposable-domain classification, mail-server reachability, MX record presence and depth, SPF / DKIM / DMARC enforcement, DMARC policy strength, SMTP banner response, and domain age. Lower scores mean safer to send to. Disposable domains are pinned at the high end of the scale. The hushmail.com score is recomputed on every audit so it always reflects the live state of the domain.
Is hushmail.com a valid email domain?
Yes, hushmail.com is a valid email domain operated by Hush Communications, a Canadian company. Hushmail provides encrypted email services and is popular among healthcare and legal professionals.
Is hushmail.com a disposable or temporary email provider?
No, hushmail.com is not a disposable email provider. It is a permanent encrypted email service that has been operating since 1999, offering HIPAA-compliant email for businesses.
What mail server does hushmail.com use?
Hushmail operates its own secure mail servers. MX records point to Hush Communications' infrastructure, hosted with a focus on encryption and privacy.
Can I send marketing emails to hushmail.com addresses?
Yes, with proper consent. Hushmail users often include healthcare and legal professionals with strict privacy requirements. Ensure compliance with relevant regulations like HIPAA and PIPEDA.
How do I verify an email address at hushmail.com?
Hushmail addresses can be verified via SMTP checks. The service returns proper responses for valid and invalid addresses with moderate rate limiting applied.