Yes. You can verify any @Square.com address in real time with a direct SMTP handshake that provides 99.7% accuracy. Square.com is operated by Block Inc., runs 1 mail server, enforces 2 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.
square.com publishes 1 MX record. The primary mail exchanger is inbound-smtp.us-west-2.amazonaws.com, hosted by amazonaws.com, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 10 | inbound-smtp.us-west-2.amazonaws.com | 35.161.157.106 | Reachable |
220 inbound-smtp.us-west-2.amazonaws.com ESMTP Amazon SES qCdXtQ8Ezclpd67gXlpxYes. square.com is a valid email domain, operated by Block 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 Square.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 square.com mailboxes deactivated since you collected them.
Expired or full square.com inboxes hard-bounce. A live SMTP check catches them before you hit send.
Low bounce rates keep you trusted by square.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.
Square.com is Block Inc., registered through MarkMonitor, Inc. and first seen Jun 4, 1994.
Block Inc. (square.com) is a financial services and digital payments company headquartered in San Francisco, California. Formerly known as Square, Block operates the Square point-of-sale platform, Cash App, Afterpay, and the TIDAL music streaming service. The company serves millions of merchants and consumers with payment processing and financial tools.
Block implements strict email authentication on the square.com domain with SPF, DKIM, and DMARC enforcement. As a financial technology company processing billions in payments, Block faces phishing threats targeting both merchants and Cash App users with fake transaction alerts and account security notifications.
Email verification against square.com returns definitive responses for valid and invalid mailboxes. The domain does not operate as catch-all. Block's mail infrastructure implements strict rate limiting consistent with financial services standards.
For partners communicating with Block employees, strong sender authentication is essential. Financial technology companies enforce strict email filtering. Full SPF, DKIM, and DMARC compliance ensures reliable inbox delivery to square.com addresses.
Upload a CSV or TXT list of Square.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 Square.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, square.com is the official corporate email domain for Block Inc.. It is used for internal business communications.
No, square.com is a corporate email domain belonging to Block Inc., used exclusively by employees and authorized personnel.
square.com uses enterprise-grade mail infrastructure. Check the MX records section for specific mail server details.
B2B marketing to square.com requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.
Corporate domains like square.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 square.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other corporate email domains we have audited.