# DMARCguard Research

> Original email authentication research with real-world data.

## Published Studies

### [State of Email Authentication 2026](https://dmarcguard.io/research/email-authentication/)

Comprehensive analysis of DMARC, SPF, DKIM, BIMI, MTA-STS, TLS-RPT, DANE, and ARC adoption across 5,499,028 domains from the complete Tranco Top Sites ranking.

- **Domains analyzed:** 5,499,028
- **Protocols covered:** 8

## Links

- [Research hub](https://dmarcguard.io/research/)
- [Download reports (PDF)](https://dmarcguard.io/research/email-authentication/)