Yes. You can verify any @Zscaler.com address in real time with a direct SMTP handshake that provides 99.7% accuracy. Zscaler.com is operated by Zscaler Inc., runs 5 mail servers, enforces 3 of 3 authentication standards, and is currently responding to SMTP.
Every check returns one of three clear outcomes so you know exactly what to do with the address.
The mailbox exists and accepts mail. Send with confidence, the address is deliverable.
The mailbox does not exist, is disposable, or will hard-bounce. Remove it to protect your sender reputation.
The server is catch-all or greylisting, so existence cannot be confirmed. Send selectively and watch engagement.
zscaler.com publishes 5 MX records. The primary mail exchanger is aspmx.l.google.com, hosted by Google Workspace, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 1 | aspmx.l.google.com | 142.251.163.27 | Reachable |
| 5 | alt2.aspmx.l.google.com | 172.253.116.26 | Reachable |
| 5 | alt1.aspmx.l.google.com | 108.177.123.26 | Reachable |
| 10 | aspmx3.googlemail.com | 172.253.116.26 | Reachable |
| 10 | aspmx2.googlemail.com | 108.177.123.26 | Reachable |
220 mx.google.com ESMTP 6a1803df08f44-8ccea245556si87458986d6.488 - gsmtpYes. zscaler.com is a valid email domain, operated by Zscaler Inc.. Addresses are persistent and real mail reaches a genuine recipient. Individual mailboxes still go stale, so verify each one before you send.
A live SMTP handshake connects to Zscaler.com's mail server and asks whether the mailbox exists using the RCPT TO command, without ever transmitting a message. The recipient never sees the check.
Each address runs through 30+ checks including SMTP existence, catch-all detection, role-account filtering, and disposable matching. The same engine has verified billions of addresses since 2012.
Every unverified address is a gamble. Here is what happens when you skip verification and mail a list that has not been cleaned.
People leave companies. Verification flags zscaler.com mailboxes deactivated since you collected them.
Expired or full zscaler.com inboxes hard-bounce. A live SMTP check catches them before you hit send.
Low bounce rates keep you trusted by zscaler.com mail servers and the major mailbox providers.
Verified contacts mean your CRM, lead scoring, and routing all run on addresses that reach a person.
Zscaler.com is Zscaler Inc., registered through MarkMonitor, Inc. and first seen Jul 14, 2008.
Zscaler Inc. (zscaler.com) is a cloud security company headquartered in San Jose, California. Zscaler operates the world's largest security cloud, processing over 300 billion transactions daily through its Zero Trust Exchange platform. The company provides secure internet access, private application access, and digital experience monitoring for enterprise clients globally.
Zscaler implements exemplary email authentication on the zscaler.com domain with SPF, DKIM, and DMARC enforcement. As a cloud security vendor, Zscaler applies its own zero-trust security philosophy to its corporate email, maintaining industry-leading authentication and filtering standards.
Email verification against zscaler.com returns definitive responses for valid and invalid mailboxes. The domain does not operate as catch-all. Zscaler's mail infrastructure implements strict rate limiting and advanced security measures on inbound SMTP connections.
Reaching zscaler.com inboxes requires flawless sender authentication. Cloud security companies apply the highest email filtering standards. Complete SPF, DKIM, and DMARC compliance with strong sender reputation is essential for reliable delivery to Zscaler employees.
Upload a CSV or TXT list of Zscaler.com addresses to the bulk email verifier. Every address runs through a live SMTP handshake plus catch-all, role-account and disposable detection, and you download a clean list when processing completes. For real-time checks at signup, use the real-time email verification API.
CSV or TXT with one email per line. No formatting needed.
Each Zscaler.com address is checked with a live server handshake.
Get a verified list with status codes, risk flags, and catch-all detection.
Pay as you go. No subscriptions, and credits never expire.
Everything about verifying email at this domain.
Yes, zscaler.com is the official corporate email domain for Zscaler Inc.. It is used for internal business communications.
No, zscaler.com is a corporate email domain belonging to Zscaler Inc., used exclusively by employees and authorized personnel.
zscaler.com uses enterprise-grade mail infrastructure. Check the MX records section for specific mail server details.
B2B marketing to zscaler.com requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.
Corporate domains like zscaler.com may use catch-all configurations that accept all addresses. Use BulkEmailChecker advanced verification to detect catch-all behavior and validate individual mailboxes.
Upload a CSV or TXT list to the bulk email verifier. Every address runs through 30+ checks including SMTP existence, catch-all detection, role-account, and disposable matching. Processing time depends on list size.
99.7% accurate using a direct SMTP handshake with zscaler.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other corporate email domains we have audited.