---
title: "5 key contributors to DMARC’s development | DMARC Report"
description: "DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header."
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canonical: "https://dmarcreport.com/blog/5-key-contributors-to-dmarcs-development/"
---

Quick Answer

DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible \`From\` header. According to Google's February 2024 bulk sender requirements, a DMARC policy of at least \`p=none\` is now mandatory for any domain sending 5,000+ messages per day to Gmail users. DMARC Report

Related: [Free DMARC Checker](/tools/dmarc-checker/) ·[How to Create an SPF Record](/tools/spf-record-generator/) ·[SPF Record Format](/blog/spf-format-checker-dos-and-donts-for-email-authentication/) 

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![5 key contributors to DMARC’s development](https://media.mailhop.org/dmarcreport/images/2022/04/dmarc-alignment-6379.jpg) 

## Try Our Free DMARC Checker

Validate your DMARC policy, check alignment settings, and verify reporting configuration.

[ Check DMARC Record → ](/tools/dmarc-checker/) 

![Create dmarc record 150x150](https://media.mailhop.org/dmarcreport/images/2024/12/create-dmarc-record-150x150.jpg) 

> DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle. The aggregate reports tell you exactly who sends email from your domain. If you’re not reading them, you’re flying blind on your own email security posture.

DMARC ([RFC 7489](https://datatracker.ietf.org/doc/html/rfc7489)) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible `From` header. According to Google’s February 2024 bulk sender requirements, a DMARC policy of at least `p=none` is now mandatory for any domain sending 5,000+ messages per day to Gmail users. DMARC Report

5 key contributors to DMARC’s development

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DMARC was introduced as a critical email authentication protocol in 2012\. Its creation was no accident - it was a cohesion of effort by industry visionaries determined to fight phishing and [spoofing attacks](https://www.computerweekly.com/news/366546952/Rise-in-fraudsters-spoofing-the-websites-of-leading-UK-banks). This collaboration laid the foundation for a **safer email ecosystem**, curtailing the growing threats to digital communication .

The specification was published as an [Internet Engineering Task Force (IETF)](https://en.wikipedia.org/wiki/Internet%5FEngineering%5FTask%5FForce) draft, marking a significant milestone in email security. Many organizations worked alongside experts and other stakeholders to tackle [email security](https://dmarcreport.com/blog/why-email-security-matters-and-how-to-get-it-right/) challenges. The key brands were [Google, Yahoo](https://dmarcreport.com/blog/google-and-yahoos-new-email-authentication-policy-for-2024/), **PayPal, Microsoft, and AOL**. This blog sheds light on the top five contributors to DMARC’s ideation, development, and propagation.

## 1\. Mark Risher

Mark Risher was associated with Yahoo and \*\*played a big role in addressing the challenges existing in [email authentication](https://dmarcreport.com/blog/why-email-security-matters-and-how-to-get-it-right/) while also focusing on combating phishing and spoofing threats. He was actively involved in the process of integrating [SPF](https://dmarcreport.com/what-is-spf/) and DKIM into the DMARC framework.\_ His advocacy for user protection and promotion of adoption helped create a larger ecosystem of DMARC users\_.

## 2\. Dave Crocker

Dave Crocker is regarded as a pioneer in email and [internet protocols](https://www.cloudflare.com/learning/network-layer/internet-protocol/). He significantly contributed to DMARC’s creation through his deep technical expertise and influence on the vast industry. Dave was very well-versed in SMTP, SPF, and DKIM, which helped the team in shaping DMARC’s architecture.

He collaborated and participated in discussions and working groups to refine [DMARC](https://dmarcreport.com/) so that it practically and efficiently meets the needs of the users. And that’s not it; this visionary guy actively contributed to the documentation and formalization of DMARC as an IETF draft, which helped advance DMARC’s path toward **worldwide adoption**.

![Dmarc record generator](https://media.mailhop.org/dmarcreport/images/2024/12/dmarc-record-generator.jpg) 

## 3\. Steve Jones

Steve Jones represented PayPal and focused on protecting users from [phishing attacks](https://www.bleepingcomputer.com/news/security/fbi-warns-of-massive-wave-of-road-toll-sms-phishing-attacks/). _He worked closely with other major organizations to align efforts toward a unified email authentication standard_. His technical expertise was used in building [DMARC policy](https://dmarcreport.com/blog/what-is-a-dmarc-policy-and-how-does-it-affect-sending-my-emails/) and reporting mechanisms so that domain owners could easily **implement and enforce the protocol**.

In short, Steve Jones’ efforts helped position DMARC as a practical and \*\*widely accepted solution to [email fraud](https://komonews.com/news/local/five-sisters-multi-state-mail-fraud-scheme-retail-fraudulent-returns-assistant-united-states-attorney-rachel-yemini-homeland-security-investigations-post-office-250000-fine-indictment).

![Dmarc check](https://media.mailhop.org/dmarcreport/images/2024/12/dmarc-check-6706.jpg) 

## 4\. Brett McDowell

Brett McDowell, representing PayPal, was instrumental in the development of DMARC through his leadership and vision . He coordinated efforts among industry stakeholders to create a unified approach to combating [phishing and spoofing](https://thehackernews.com/2024/07/proofpoint-email-routing-flaw-exploited.html). Recognizing the need for a protocol that combined SPF and [DKIM](https://dmarcreport.com/what-is-dkim/) with added reporting capabilities, he helped shape **DMARC’s architecture**.

McDowell also advocated for its adoption across industries, promoting its benefits for **online trust and security**. _By fostering collaboration among competitors and positioning PayPal as an early adopter, he played a key role in establishing DMARC as a widely accepted standard for email security_.

## 5\. Janet Jones

Janet Jones was from Google. _She played an important role in integrating DMARC into Gmail - one of the heavily used mailboxes_. She took the responsibility of promoting its use among many [Gmail users](https://minutemirror.com.pk/new-interesting-feature-introduced-for-gmail-users-311659/#google%5Fvignette) and advocated for its adoption so that the [email system](https://www.lawinsider.com/dictionary/email-systems) would get safer. It was Janet whose effort solidified DMARC’s role as a critical technology in preventing email fraud, boosting its \*\*credibility and adoption across the world.

## Topics

[ dkim ](/tags/dkim/)[ DMARC ](/tags/dmarc/)[ email security ](/tags/email-security/)[ SPF ](/tags/spf/) 

![Brad Slavin](https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg) 

[ Brad Slavin ](/authors/brad-slavin/) 

General Manager

Founder and General Manager of DuoCircle. Product strategy and commercial lead for DMARC Report's 2,000+ customer base.

[LinkedIn Profile →](https://www.linkedin.com/in/bradslavin) 

## Take control of your DMARC reports

Turn raw XML into actionable dashboards. Start free - no credit card required.

[Start Free Trial](https://app.dmarcreport.com/) [Check Your DMARC Record](/tools/dmarc-checker/) 

## Related Articles

[  Foundational 8m  10 Critical Learnings From Verizon’s 2021 DBIR - A DMARCReport Perspective  Nov 25, 2025 ](/blog/10-critical-learnings-from-verizons-2021-dbir-a-dmarcreport-perspective/)[  Foundational 12m  10 DNS Blacklist Insights That Improve Email Security And Deliverability Fast  Nov 14, 2025 ](/blog/10-dns-blacklist-insights-to-improve-email-security-and-deliverability/)[  Foundational 12m  10 Email Spoofing Detection Tools That Dramatically Improve Brand Protection  Nov 11, 2025 ](/blog/10-email-spoofing-detection-tools-that-dramatically-improve-brand-protection/)[  Foundational 12m  10 Reasons SPF Filtering Is Critical For Email Security  Nov 19, 2025 ](/blog/10-reasons-spf-filtering-is-critical-for-email-security/)

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