Yes. You can verify any @Cbp.gov address in real time with a direct SMTP handshake that provides 99.7% accuracy. Cbp.gov is operated by U.S. Customs and Border Protection, runs 0 mail servers, enforces 2 of 3 authentication standards, and is currently not 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.
cbp.gov publishes no MX records, which means it cannot receive email. Any message sent to a cbp.gov address will hard-bounce at the sending server.
Yes. cbp.gov is a valid email domain, operated by U.S. Customs and Border Protection. 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 Cbp.gov'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 cbp.gov mailboxes deactivated since you collected them.
Expired or full cbp.gov inboxes hard-bounce. A live SMTP check catches them before you hit send.
Low bounce rates keep you trusted by cbp.gov mail servers and the major mailbox providers.
Verified contacts mean your CRM, lead scoring, and routing all run on addresses that reach a person.
Cbp.gov is U.S. Customs and Border Protection, registered through get.gov and first seen Apr 2, 2003.
The domain cbp.gov belongs to U.S. Customs and Border Protection (CBP), the largest federal law enforcement agency within the Department of Homeland Security. Headquartered in Washington, D.C., CBP is responsible for securing U.S. borders, facilitating lawful international trade and travel, and enforcing customs, immigration, and agricultural regulations.
As a federal .gov domain, cbp.gov complies with CISA Binding Operational Directive 18-01, mandating DMARC, SPF, and DKIM. Given CBP's role in border security and trade enforcement, phishing emails impersonating the agency could target importers, travelers, and businesses, making strict email authentication essential for protecting public trust.
CBP mail servers do not function as catch-all systems. The SMTP infrastructure rejects messages to nonexistent recipients at the connection level. As a DHS component agency, CBP employs aggressive rate limiting, greylisting, and multi-layered connection filtering to secure its email environment.
Delivering email to cbp.gov requires rigorous authentication compliance. DHS-managed email gateways apply the strictest content filtering, malware scanning, and sender verification. Senders must have fully compliant SPF, DKIM, and DMARC records and a strong IP reputation to achieve delivery to CBP addresses.
Upload a CSV or TXT list of Cbp.gov 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 Cbp.gov 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, cbp.gov is a valid official government email domain operated by U.S. Customs and Border Protection. It is used by government employees and officials for official correspondence.
No, cbp.gov is not a disposable or temporary email provider. It is an official government domain used for legitimate government communications and operations.
cbp.gov uses mail servers managed by U.S. Customs and Border Protection. Check the MX records section above for specific server details and authentication configuration.
Yes, cbp.gov addresses accept incoming email. Government mail servers typically enforce strict spam filtering, authentication checks (SPF, DKIM, DMARC), and content scanning. Ensure your sending domain is properly authenticated.
Use BulkEmailChecker to verify cbp.gov addresses. Government domains may have specific SMTP behaviors including greylisting and strict rate limiting. Our tool handles these provider-specific configurations automatically.
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 cbp.gov's mail servers, the same engine that has verified billions of addresses since 2012.
Other government email domains we have audited.