usps.com - Email Domain Verification & Deliverability Report

Active Government Email
Organization: United States Postal Service
Mail Server: Proofpoint
Verified 1 days ago

Verify email addresses @usps.com. View MX records, mail server configuration, and authentication status for United States Postal Service.

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MX Records for usps.com

PriorityMail ServerIP Address
10 mxa-0038fd02.gslb.gpphosted.com 66.159.227.37
10 mxb-0038fd02.gslb.gpphosted.com 66.159.227.37
SMTP Status: Responding
SMTP Banner:
220 mx0e-0038fd02.gpphosted.com ESMTP mfa-m0420790

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

Email Authentication for usps.com

SPF Record Pass

v=spf1 ip4:56.0.0.0/16 -all

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

DMARC Record Reject

v=DMARC1; p=reject; fo=1; rua=mailto:reports@dmarc.cyber.dhs.gov,mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

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

DKIM Not Detected

DKIM detection is limited from external scanning. The domain may use DKIM with selectors not covered by our scan.

Authentication Summary: usps.com has SPF and DMARC configured. This provides good protection against email spoofing. Senders can expect reliable email delivery to this domain.

WHOIS & Domain Information

Registration Details

Domain
usps.com
TLD
.com
Created
1997-07-09
Updated
2025-06-24
Expires
2026-07-08
Domain Age
28 years

Registrar

Name
Network Solutions, LLC
IANA ID
2

Registrant Contact

Name
Registrant Street: 4200 Wake Forest Road
Location
Raleigh, NC, UNITED STATES

Technical Contact

Location
UNITED STATES

Name Servers

  • DNS141.USPS.COM
  • DNS082.USPS.COM

Email Verification for usps.com Government Addresses

The United States Postal Service (usps.com) is an independent agency of the U.S. federal government responsible for providing postal service across the United States. USPS delivers billions of pieces of mail annually and is one of the most commonly impersonated organizations in phishing attacks worldwide.

USPS implements email authentication with SPF, DKIM, and DMARC. The Postal Service is among the most impersonated entities globally for phishing, with fake delivery notification scams targeting millions of Americans.

The usps.com mail servers do not operate as catch-all. Recipients are validated and invalid addresses rejected. USPS applies strict security filtering.

Reliable delivery to usps.com requires full authentication compliance. USPS applies rigorous filtering given its status as a top phishing impersonation target.

How to Verify usps.com Email Addresses

Need to check if an email address at usps.com actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to usps.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 usps.com Email
Use BulkEmailChecker's free email verification tool to instantly validate any usps.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 usps.com Emails in Bulk
Have a mailing list full of usps.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 usps.com Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates usps.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, usps.com is an official government email domain used by United States Postal Service. Government domains are verified and regulated, making them highly trustworthy.
No, usps.com is an official government domain used by United States Postal Service for official government communications.
usps.com uses government-managed mail infrastructure with strict security measures and email authentication.
Sending unsolicited marketing emails to government addresses at usps.com is generally not recommended. Only send with explicit opt-in consent.
Government domains like usps.com often have strict mail server configurations. Use BulkEmailChecker for reliable verification results.
The fastest and most accurate way to verify a usps.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 usps.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 usps.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 usps.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 usps.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.

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