Yes. You can verify any @Dot.gov address in real time with a direct SMTP handshake that provides 99.7% accuracy. Dot.gov is operated by Department of Transportation, runs 1 mail server, 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.
dot.gov publishes 1 MX record. The primary mail exchanger is dot-gov.mail.protection.outlook.com, hosted by Microsoft 365, 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 | dot-gov.mail.protection.outlook.com | 52.101.8.50 | Reachable |
220 BL02EPF0001B418.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Sat, 30 May 2026 09:10:20 +0000 [08DEBC9C88CDDC66]Yes. dot.gov is a valid email domain, operated by Department of Transportation. 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 Dot.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 dot.gov mailboxes deactivated since you collected them.
Expired or full dot.gov inboxes hard-bounce. A live SMTP check catches them before you hit send.
Low bounce rates keep you trusted by dot.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.
Dot.gov is Department of Transportation, registered through get.gov and first seen Oct 1, 1997.
The domain dot.gov belongs to the U.S. Department of Transportation (DOT), the federal cabinet department responsible for the nation's transportation systems and infrastructure. Headquartered in Washington, D.C., the DOT oversees aviation (FAA), highways (FHWA), railroads (FRA), transit, and maritime transportation to ensure safe, efficient movement of people and goods.
As a federal .gov domain, dot.gov complies with CISA Binding Operational Directive 18-01, mandating DMARC, SPF, and DKIM implementation. The Department of Transportation's regulatory role makes it a target for phishing attacks aimed at transportation companies, contractors, and the traveling public seeking safety or regulatory information.
DOT mail servers do not operate as catch-all systems. The SMTP infrastructure rejects messages to nonexistent recipients at the connection level. Federal email servers for dot.gov employ greylisting, rate limiting, and strict sender validation to manage inbound correspondence securely.
Delivering email to dot.gov requires strict adherence to authentication standards. Federal email gateways apply thorough content filtering, attachment scanning, and reputation-based sender evaluation. Full SPF, DKIM, and DMARC compliance and a clean sending reputation are necessary for reliable delivery to DOT staff inboxes.
Upload a CSV or TXT list of Dot.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 Dot.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, dot.gov is an official government email domain used by Department of Transportation. Government domains are verified and regulated, making them highly trustworthy.
No, dot.gov is an official government domain used by Department of Transportation for official government communications.
dot.gov uses government-managed mail infrastructure with strict security measures and email authentication.
Sending unsolicited marketing emails to government addresses at dot.gov is generally not recommended. Only send with explicit opt-in consent.
Government domains like dot.gov often have strict mail server configurations. Use BulkEmailChecker for reliable verification results.
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 dot.gov's mail servers, the same engine that has verified billions of addresses since 2012.
Other government email domains we have audited.