zendesk.com - Email Domain Verification & Deliverability Report

Active Corporate Email
Organization: Zendesk Inc.
Mail Server: Mimecast
Verified 5 days ago

Verify email addresses @zendesk.com. View MX records, mail server configuration, and authentication status for Zendesk Inc..

Email Verification Tool
LIVE
SMTP Check
Mailbox Detection
Disposable Check
No Email Sent

MX Records for zendesk.com

PriorityMail ServerIP Address
0 us-smtp-inbound-2.mimecast.com 170.10.128.141
0 us-smtp-inbound-1.mimecast.com 170.10.128.221
110 aspmx.l.google.com 192.178.155.27
120 alt1.aspmx.l.google.com 108.177.123.27
120 alt2.aspmx.l.google.com 172.253.116.27
130 aspmx2.googlemail.com 108.177.123.26
SMTP Status: Responding
SMTP Banner:
220 us-smtp-inbound-1.mimecast.com ESMTP; Mon, 13 Apr 2026 00:11:05 -0400

zendesk.com uses Mimecast mail servers, which means emails are processed through Mimecast infrastructure with their built-in spam filtering and security controls.

Email Authentication for zendesk.com

SPF Record Pass

v=spf1 ip4:103.151.192.0/23 ip4:104.43.243.237 ip4:149.97.173.180 ip4:163.116.128.0/17 ip4:170.10.128.0/24 ip4:170.10.129.0/24 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ip4:170.10.133.0/24 ip4:18.194.95.56 ip4:18.198.96.88 include:_spf1.zendesk.com ~all
Authorized Senders:
_spf1.zendesk.com

SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of zendesk.com.

DMARC Record Reject

v=DMARC1; p=reject

DMARC (Domain-based Message Authentication) tells receiving servers what to do with emails that fail authentication checks.

DKIM Found

DKIM signatures were detected for zendesk.com, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: zendesk.com has full email authentication configured with SPF, DMARC, and DKIM. This provides strong protection against email spoofing and phishing. Emails sent from this domain are well-authenticated and likely to have high deliverability.

WHOIS & Domain Information

Registration Details

Domain
zendesk.com
TLD
.com
Created
2005-05-16
Updated
2024-04-15
Expires
2027-05-15
Domain Age
20 years

Registrar

Name
MarkMonitor, Inc.
IANA ID
292

Registrant Contact

Organization
Zendesk, Inc.
Location
UNITED STATES

Technical Contact

Location
UNITED STATES

Name Servers

  • ns-754.awsdns-30.net
  • ns-1858.awsdns-40.co.uk
  • ns-1213.awsdns-23.org
  • ns-444.awsdns-55.com

Verifying Emails at Zendesk Inc.

Zendesk Inc. (zendesk.com) is a customer service and engagement platform company headquartered in San Francisco, California. Zendesk provides cloud-based customer support, ticketing, and CRM solutions used by over 100,000 businesses to manage customer interactions across email, chat, phone, and social media channels.

Zendesk implements enterprise email authentication on the zendesk.com domain with SPF, DKIM, and DMARC enforcement. As a customer service platform that handles millions of support tickets, Zendesk faces phishing threats from campaigns impersonating ticket notifications and customer requests.

SMTP verification of zendesk.com addresses returns definitive responses for valid and invalid mailboxes. The domain does not function as catch-all. Zendesk's enterprise mail infrastructure implements rate limiting on inbound SMTP connections.

For partners communicating with Zendesk employees, proper sender authentication is essential. Zendesk's corporate email filters enforce SPF, DKIM, and DMARC validation. Full authentication compliance ensures reliable inbox delivery to zendesk.com addresses.

How to Verify zendesk.com Email Addresses

Need to check if an email address at zendesk.com actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to zendesk.com's mail servers to confirm the mailbox is real, active, and able to receive your message. No test email is ever sent, so your sender reputation stays protected.

Verify a Single zendesk.com Email
Use BulkEmailChecker's free email verification tool to instantly validate any zendesk.com address. You'll get a complete deliverability report including mailbox existence, catch-all detection, disposable domain flagging, and risk scoring, all in under 3 seconds.

Verify a List of zendesk.com Emails in Bulk
Have a mailing list full of zendesk.com addresses? Upload your CSV or TXT file to BulkEmailChecker and verify thousands of email addresses in minutes. Our bulk verification engine runs 30+ checks per address including syntax validation, DNS resolution, SMTP handshake, and spam trap detection. Clean your list before every campaign to keep bounce rates below 2% and protect your sender score. See bulk pricing.

Verify zendesk.com Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates zendesk.com email addresses at the point of entry, blocking invalid, disposable, and risky addresses before they enter your database. Integrate with a single API call and prevent bad data at the source.

Frequently Asked Questions

Yes, zendesk.com is the official corporate email domain for Zendesk Inc.. It is used for internal business communications and is not available for public registration.
No, zendesk.com is a corporate email domain belonging to Zendesk Inc., used exclusively by employees and authorized personnel.
zendesk.com uses enterprise-grade mail infrastructure. Check the MX records section above for specific mail server details.
B2B marketing to zendesk.com requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.
Corporate domains like zendesk.com may use catch-all configurations. Use BulkEmailChecker's advanced verification to detect catch-all behavior.
The fastest and most accurate way to verify a zendesk.com email address is to use BulkEmailChecker's free email verification tool. Simply enter the full email address and our system performs SMTP-level validation by connecting directly to zendesk.com's mail servers. You'll get instant results showing whether the mailbox exists, is deliverable, and is safe to send to, all without sending a single email.
Yes. BulkEmailChecker uses SMTP verification to check if a zendesk.com mailbox exists without ever delivering an email. Our system connects to the domain's mail server, performs an SMTP handshake, and queries the mail server to confirm whether the recipient address is valid. This process is completely invisible to the email recipient and does not affect your sender reputation.
Sending to invalid email addresses causes hard bounces, which directly damage your sender reputation. Internet Service Providers (ISPs) and email providers track your bounce rate, and if it exceeds 2%, your emails may start landing in spam folders or get blocked entirely. Verifying zendesk.com addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.
BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of zendesk.com email addresses and verify them all at once. Each address goes through 30+ verification checks including syntax validation, DNS/MX lookup, SMTP verification, disposable domain detection, and spam trap identification. Results are typically ready within minutes and can be downloaded as a clean, verified list.
Email verification is the process of confirming that an email address is real, properly formatted, and capable of receiving messages. It matters because sending to invalid addresses causes bounces, damages your sender reputation, wastes marketing budget, and can get your sending IP blacklisted. BulkEmailChecker verifies addresses at the SMTP level, the most accurate method available, ensuring your emails reach real people.
MX (Mail Exchange) records are DNS entries that specify which mail servers are responsible for receiving email for a domain. When you send an email, your mail server looks up the recipient domain's MX records to find where to deliver the message. If a domain has no MX records, it cannot receive email. BulkEmailChecker checks MX records as part of every verification to confirm the domain is configured for email delivery.
A catch-all (or accept-all) domain is configured to accept email sent to any address at that domain, regardless of whether the specific mailbox exists. This makes it harder to verify individual addresses because the server always responds positively. BulkEmailChecker detects catch-all configurations and flags them in verification results so you can make informed decisions about sending to those addresses.
Yes. BulkEmailChecker offers a real-time email verification API that you can integrate into signup forms, CRM systems, lead capture tools, and any application that collects email addresses. The API validates addresses at the point of entry, blocking invalid, disposable, and risky emails before they enter your database. Integration takes just a single API call with response times under 3 seconds.

Related Domains

workday.com
Workday Inc.
corporate
chef.io
Progress Software
corporate
hochtief.com
HOCHTIEF AG
corporate
kindermorgan.com
Kinder Morgan
corporate
coca-cola.com
The Coca-Cola Company
corporate
basecamp.com
Basecamp LLC
corporate
logitech.com
Logitech International
corporate
norfolksouthern.com
Norfolk Southern
corporate
Browse all Corporate Email domains

Need to Verify More @zendesk.com Emails?

Verify any email address instantly for deliverability, catch-all detection, and inbox verification.

Free @zendesk.com Checker View Bulk Pricing
No Credit Card Required 99.7% Accuracy Real-time API Available
ISO 27001 Security Certified
SOC 2 Type II Auditor Verified
GDPR Fully Compliant
CCPA Privacy Ready
HIPAA Healthcare Ready
AES-256 Encryption