runbox.com - Email Domain Verification & Deliverability Report

Active Free Email Provider
Organization: Runbox Solutions AS
Mail Server: runbox.com
Verified 19 hours ago

Real-time verification data for Runbox Solutions AS (runbox.com). A Free Email Provider .

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MX Records for runbox.com

PriorityMail ServerIP Address
10 mx.runbox.com 185.226.149.25
SMTP Status: Responding
SMTP Banner:
220 aibo.runbox.com ESMTP Exim 4.95 Ubuntu Fri, 06 Mar 2026 05:10:10 +0100

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

Email Authentication for runbox.com

SPF Record Pass

v=spf1 include:spf.runbox.com -all
Authorized Senders:
spf.runbox.com

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

DMARC Record Quarantine

v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@runbox.com

Policy applied to: 100% of emails

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

DKIM Found

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

Authentication Summary: runbox.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
runbox.com
TLD
.com
Created
1999-08-10
Updated
2025-07-12
Expires
2026-08-10
Domain Age
26 years

Registrar

Name
ENOM, INC.
IANA ID
48

Registrant Contact

Name
REDACTED FOR PRIVACY
Organization
REDACTED FOR PRIVACY
Location
REDACTED FOR PRIVACY, NO, NORWAY

Technical Contact

Name
REDACTED FOR PRIVACY
Organization
REDACTED FOR PRIVACY
Location
REDACTED FOR PRIVACY, REDACTED FOR PRIVACY, UNITED STATES

Name Servers

  • DNS61.COPYLEFT.NO
  • DNS62.COPYLEFT.NO
  • DNS63.COPYLEFT.NO

About runbox.com Email Verification

runbox.com is a Norwegian privacy-focused email service operated by Runbox Solutions AS, based in Oslo. Founded in 2000, Runbox provides paid email with strong privacy protections, powered by hydroelectric energy, and hosted in Norwegian data centers under strict privacy laws.

runbox.com implements SPF, DKIM, and DMARC authentication. The service operates under Norwegian privacy laws and EU GDPR. Runbox emphasizes sustainability and privacy as core values.

The runbox.com mail servers validate recipients and reject invalid addresses. The domain does not operate as catch-all. Security-focused filtering protects the privacy-conscious user base.

For delivery to runbox.com, authenticate with SPF, DKIM, and DMARC. Runbox users are privacy-focused. Well-authenticated messages deliver reliably.

How to Verify runbox.com Email Addresses

Need to check if an email address at runbox.com actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to runbox.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 runbox.com Email
Use BulkEmailChecker's free email verification tool to instantly validate any runbox.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 runbox.com Emails in Bulk
Have a mailing list full of runbox.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 runbox.com Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates runbox.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, runbox.com is a valid email domain operated by Runbox Solutions AS, a Norwegian company providing privacy-focused email since 2000.
No, runbox.com is a permanent paid email service based in Norway with strong privacy protections.
Runbox operates its own mail servers in Norway, powered by renewable energy and designed for privacy.
Yes, with consent. Runbox users value privacy. Ensure GDPR compliance and transparent practices.
Runbox addresses can be verified via SMTP with standard accept/reject responses.
The fastest and most accurate way to verify a runbox.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 runbox.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 runbox.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 runbox.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 runbox.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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