# DMARCguard Free Tools

> 47 free email authentication tools for DMARC, SPF, DKIM, BIMI, MTA-STS, TLS-RPT, ARC, DANE, ARF. No signup required. All checks run client-side via Cloudflare DoH — your data never leaves the browser.

## Email Authentication (14 tools)

**DMARC**

- [Checker](https://dmarcguard.io/tools/dmarc-checker/)
- [Generator](https://dmarcguard.io/tools/dmarc-generator/)
- [Report Analyzer](https://dmarcguard.io/tools/dmarc-report-analyzer/)
- [Failure Diagnoser](https://dmarcguard.io/tools/dmarc-failure-diagnoser/)

**SPF**

- [Checker](https://dmarcguard.io/tools/spf-checker/)
- [Generator](https://dmarcguard.io/tools/spf-generator/)
- [Flattener](https://dmarcguard.io/tools/spf-flattener/)
- [Syntax Inspector](https://dmarcguard.io/tools/spf-syntax-inspector/)
- [Macro Debugger](https://dmarcguard.io/tools/spf-macro-debugger/)

**DKIM**

- [Checker](https://dmarcguard.io/tools/dkim-checker/)
- [Generator](https://dmarcguard.io/tools/dkim-generator/)
- [CNAME Validator](https://dmarcguard.io/tools/dkim-cname-validator/)

**ARC**

- [Readiness Checker](https://dmarcguard.io/tools/arc-checker/)
- [Chain Analyzer](https://dmarcguard.io/tools/arc-chain-analyzer/)

## Transport Security (8 tools)

**TLS-RPT**

- [Checker](https://dmarcguard.io/tools/tls-rpt-checker/)
- [Generator](https://dmarcguard.io/tools/tls-rpt-generator/)
- [Report Analyzer](https://dmarcguard.io/tools/tls-report-analyzer/)

**MTA-STS**

- [Checker](https://dmarcguard.io/tools/mta-sts-checker/)
- [Generator](https://dmarcguard.io/tools/mta-sts-generator/)

**DANE**

- [Checker](https://dmarcguard.io/tools/dane-checker/)
- [Generator](https://dmarcguard.io/tools/dane-generator/)

**CSP**

- [Validator](https://dmarcguard.io/tools/csp-validator/)
- [Generator](https://dmarcguard.io/tools/csp-validator/#generate)

## Brand & Reporting (4 tools)

**BIMI**

- [Checker](https://dmarcguard.io/tools/bimi-checker/)
- [Generator](https://dmarcguard.io/tools/bimi-generator/)

**ARF**

- [Forensic Checker](https://dmarcguard.io/tools/arf-checker/)
- [Report Analyzer](https://dmarcguard.io/tools/arf-report-analyzer/)

## Compliance (11 tools)

**NIS2**

- [Readiness Scorecard](https://dmarcguard.io/tools/nis2-readiness/)
- [BSI Edition (DE)](https://dmarcguard.io/tools/bsi-nis2/)
- [Supplier Questionnaire](https://dmarcguard.io/tools/nis2-supplier-questionnaire/)

**DORA**

- [ICT Email Mapper](https://dmarcguard.io/tools/dora-compliance/)
- [E-Mail-Check (DE)](https://dmarcguard.io/tools/dora-de/)

**PCI DSS**

- [§ 5.4.1 Anti-Phishing](https://dmarcguard.io/tools/pci-anti-phishing/)

**HIPAA**

- [§ 164.312 Readiness](https://dmarcguard.io/tools/hipaa-email-readiness/)

**Mailbox Providers**

- [Microsoft 550 5.7.15](https://dmarcguard.io/tools/microsoft-550-diagnostic/)
- [Gmail & Yahoo Bulk Sender](https://dmarcguard.io/tools/gmail-yahoo-bulk-sender/)

**NCSC**

- [Mail Check Migration](https://dmarcguard.io/tools/ncsc-mail-check-migration/)

**Migration**

- [p=none Escape Plan](https://dmarcguard.io/tools/pnone-escape-plan/)

## General Lookups (10 tools)

**General**

- [Domain Health Check](https://dmarcguard.io/tools/domain-health-check/)
- [Email Header Analyzer](https://dmarcguard.io/tools/email-header-analyzer/)
- [DNS Lookup](https://dmarcguard.io/tools/dns-lookup/)
- [MX Lookup](https://dmarcguard.io/tools/mx-lookup/)
- [CNAME Lookup](https://dmarcguard.io/tools/cname-lookup/)
- [TXT Record Lookup](https://dmarcguard.io/tools/txt-lookup/)
- [Reverse DNS Lookup](https://dmarcguard.io/tools/reverse-dns-lookup/)
- [WHOIS Lookup](https://dmarcguard.io/tools/whois-lookup/)
- [Blacklist Check](https://dmarcguard.io/tools/blacklist-check/)
- [Open Relay Tester](https://dmarcguard.io/tools/open-relay-tester/)

## Links

- [All tools](https://dmarcguard.io/tools/)
- [Dashboard](https://app.dmarcguard.io)