Are these email security tools free?

Yes. All DNS lookup and validation tools on this page are completely free to use with no account required. Check SPF, DMARC, and domain authentication records for any domain instantly.

What is the Domain Security Evaluator?

The Domain Security Evaluator tests all 5 email authentication protocols (SPF, DMARC, BIMI, MTA-STS, TLS-RPT) for any domain in a single lookup. It gives you an overall score and specific insights for each protocol.

How does the BEC Cost Calculator work?

The BEC Cost Calculator estimates your organization's annual risk from Business Email Compromise attacks based on employee count, salary, and industry. It uses FBI IC3 data to project expected losses and shows the ROI of Phish Protection.

100% Free — No Account Required

Free Email Security Tools

Check SPF, DMARC, and domain authentication records for any domain. Calculate your BEC risk. Instant results, no signup.

Domain Security Evaluator

Check all 5 email authentication protocols at once — SPF, DMARC, BIMI, MTA-STS, and TLS-RPT. Get an overall security score for your domain.

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SPF Record Checker

Analyze your SPF record, count DNS lookups, and visualize the full include tree. See if you're over the 10-lookup limit.

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DMARC Record Checker

Validate your DMARC policy, check alignment settings, and see if aggregate reporting is configured correctly.

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BEC Cost Calculator

Estimate your annual risk from Business Email Compromise attacks and see the ROI of phishing protection based on your company size and industry.

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Pricing Calculator

Get an instant monthly estimate based on your mailbox count, shared mailboxes, and additional domains. Volume discounts for 250+ users.

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What These Tools Check

SPF

TXT @ domain

Which servers can send email as your domain

DMARC

TXT @ _dmarc.domain

What to do when SPF or DKIM fails

BIMI

TXT @ default._bimi.domain

Brand logo display in email clients

MTA-STS

TXT @ _mta-sts.domain + policy file

Force TLS encryption for inbound email

TLS-RPT

TXT @ _smtp._tls.domain

Report TLS connection failures

BEC Risk

Industry data + employee count

Estimated annual Business Email Compromise cost

Need More Than a Free Check?

Too many DNS lookups?

AutoSPF automatically flattens your SPF record to stay under the 10-lookup limit. No manual maintenance required.

Learn more at autospf.com →

Need DMARC monitoring?

DMARC Report turns raw XML aggregate reports into actionable dashboards so you can track authentication across all your domains.

Learn more at dmarcreport.com →

Protect your inbox from phishing attacks

Phish Protection blocks phishing, ransomware, and BEC attacks before they reach your employees. 60-day free trial, no credit card required.

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