Key Biscayne, Florida

Building focused technology companies around email & marketing infrastructure

HJT Consortium Inc is a privately held holding company. We own and operate a small portfolio of technology and software businesses, each built and run by people who have spent their careers in the email deliverability industry.

3+Operating businesses
DMARCRFC 7489 contributor
FLHeadquartered in the USA
Our Portfolio

Companies We Own & Operate

Each business in the HJT Consortium portfolio is run independently, with its own product, customers, and team.

Email Deliverability

Email Consulting

Hands-on email deliverability consulting for senders who need to reach the inbox — DMARC, SPF, DKIM alignment, sender reputation, and ISP relations.

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SaaS · Email Marketing

Campaign Cleaner

Software that automatically audits and optimizes HTML email campaigns before they send — fixing spam triggers, broken links, oversized images, and rendering issues to boost inbox placement.

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Consumer App

Chouetty.com

A scoring app built for backgammon chouette players — tracking players, rotations, and settlements automatically so the table can focus on the game.

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Private Holdings

Additional Ventures

HJT Consortium also holds a small number of additional technology properties that are not publicly listed. Reach out if you'd like to learn more.

About HJT Consortium

A holding company run by operators, not investors

HJT Consortium Inc is based in Key Biscayne, Florida. Rather than managing a large portfolio at arm's length, we build and operate a small number of technology and software businesses directly — mostly centered on the email marketing and deliverability space where our team has spent its career.

That focus means every company under the HJT Consortium name is backed by real, specialized industry experience rather than generalist management.

  • Deep, specialized experience in email deliverability
  • Hands-on operators, not a passive holding shell
  • U.S.-based team, headquartered in Florida
Leadership

Founded by Henry Timmes

  • Named in RFC 7489Cited as a contributor to the IETF standard that defines DMARC, alongside engineers from Google, Microsoft, Yahoo, and PayPal.
  • Email deliverability careerFounder of Campaign Cleaner and Unlock The Inbox, and Postbox US, with roots in building ZeroBounce, a widely used email validation platform.
  • Operator-led portfolioEvery HJT Consortium company is run with direct, hands-on involvement — not managed at a distance.

Interested in HJT Consortium or one of our companies?

Reach out directly — we're a small team and every message gets a real reply.

Email [email protected]