Free email authentication
tools
Check your DMARC, SPF, DKIM, BIMI, and MTA-STS records instantly — no signup, no data collection, no usage limits. 11 tools, zero friction.
Every tool your domain needs
Each tool queries live DNS and returns results in seconds. No account required — enter a domain and go.
DMARC Record Checker
Validate your DMARC policy, check alignment settings, verify reporting configuration, and detect duplicate or misplaced records.
Use toolDMARC Record Generator
Create a valid DMARC record in 60 seconds. Choose your policy, configure reporting addresses, set alignment modes — copy directly into DNS.
Use toolSPF Record Checker
Analyze your SPF record, count DNS lookups against the RFC 7208 limit of 10, and visualize the full include tree.
Use toolSPF Record Generator
Build a valid SPF record by selecting your email providers and adding custom IPs. Shows live lookup counting as you build.
Use toolSPF Record Lookup
Look up any domain's SPF record from live DNS. See the raw TXT record, expand nested includes, and count total lookups.
Use toolSPF Validator
Validate any SPF record for syntax errors, DNS lookup violations, void lookups, and full RFC 7208 compliance.
Use toolDKIM Record Lookup
Auto-discover DKIM selectors across 185+ common selectors. Identify Google Workspace, Microsoft 365, SendGrid, and 100+ providers.
Use toolBIMI Checker
Verify your BIMI record, fetch the brand logo SVG, and check VMC (Verified Mark Certificate) status for any domain.
Use toolMTA-STS Checker
Validate the MTA-STS DNS record and HTTPS-hosted policy file. Check enforcement mode, authorized MX hosts, and cache duration.
Use toolDomain Auth Checker
Check all 5 email authentication protocols at once — SPF, DKIM, DMARC, BIMI, and MTA-STS. Get an overall authentication posture score.
Use toolWhat these tools check
Six email authentication protocols, each published as a DNS record. Together they determine whether your email is trusted, displayed with your brand logo, and encrypted in transit.
Declares which servers are authorized to send email for your domain. Receivers check the sending IP against your SPF list.
Tells receivers what to do when SPF or DKIM fails — monitor, quarantine, or reject. Enables aggregate and forensic reporting.
Cryptographic signature attached to each email. The receiving server verifies the signature against a public key in DNS.
Displays your brand logo next to authenticated emails in supporting clients like Gmail, Apple Mail, and Yahoo Mail.
Forces TLS encryption on inbound mail delivery, preventing downgrade attacks and man-in-the-middle interception.
Instructs receivers to send reports about TLS connection failures when delivering email to your domain.
11 tools, zero signups,
no data collection
We built these tools because checking your email authentication records should not require handing over your email address. Every lookup queries live DNS directly and returns results to your browser — nothing is stored, logged, or tracked.
When you need
more than a snapshot
Free tools check one domain at a time and give you a point-in-time result. DMARC Report monitors all your domains continuously — processing aggregate and forensic reports, classifying senders, tracking trends, and alerting you when something changes.
Moving from p=none to p=reject typically takes 9 to 18 months, with 90+ days per policy phase. You need continuous monitoring — not periodic spot checks — to get there safely.
Ready to move beyond spot checks?
Start your free trial — no credit card required. Setup takes 5 minutes.
Start Free TrialWhat Users Say About Our Tools
Rated 4.8/5 on G2 · 469 verified reviews
Dave G.
Owner
"DMARC Report has been invaluable in fixing email deliverability issues for our clients"
DMARC Report dashboard allows us to see easily what is compliant and what isn't compliant so we can quickly fix issues.
Antoine L.
"Incredible Service for an affordable price"
The software is easy to use and has also an entry friendly free plan up to 1,000 mails per month.
Zunaid K.
Director
"Essential tool for email delivery"
This tool helps us to implement DMARC reporting for our domains in an easy to use manner.