---
title: "Check SPF, DKIM, DMARC, BIMI and MTA-STS in One Pass"
description: "A short walkthrough of the free WarmInboxes email authentication checker: SPF, DKIM, DMARC, BIMI and MTA-STS for one domain in a single pass, with the…"
url: https://warminboxes.com/videos/email-authentication-checker
breadcrumb: "Home > Tool demos > Email Authentication Checker"
---
# Check SPF, DKIM, DMARC, BIMI and MTA-STS in One Pass

Tool demo · Email Authentication Checker

A short walkthrough of the free WarmInboxes email authentication checker: SPF, DKIM, DMARC, BIMI and MTA-STS for one domain in a single pass, with the optional records marked optional.

## Email Authentication Checker

SPF, DKIM, DMARC, MX, BIMI and MTA-STS for one domain in one pass, with the optional ones marked optional.

[Run the Email Authentication Checker →](https://warminboxes.com/email-authentication-checker) Free, no account.