HubSpot Gold Partner · Paris

Clarity
for your
HubSpot.

Consulting, education and software from one person who has seen inside hundreds of portals. Three ways in, one standard of work.

5.0 ★★★★★ · Verified reviews on the HubSpot marketplace
Read them all on HubSpot ↗

Comprehensive support, from implementation to day-to-day use

Comprehensive support, from implementation to day-to-day use. Grégoire from HS-Simple helped us set up HubSpot, organize workshops (which were essential!) to structure our operations, create an environment tailored to our needs and projects (various objects, pipelines, properties, workflows, etc.), helping our teams adopt the platform, performing technical integrations with various databases, creating documentation, setting up some automations both within and outside of HubSpot, and, more generally, building internal expertise. He enabled us to realize the tool’s full potential and, in the process, make our organization far more efficient and self-sufficient. Our goal was to successfully instill healthy habits among users, to be able to rely on a solid database and seamlessly integrated tools, while benefiting from precision-tuned automations, and we are fully satisfied with what we have achieved. Thank you so much for your support, Grégoire, and for these final handover phases, which allow us to look forward to the future with confidence.

Covelo, A. Digital Director, ZUPdeCO

A CRM refacto lead with brio !

Great service, super organized, with an excellent understanding of what’s possible and exceptional ability to explain complex topics clearly. Together, we completely redesigned and implemented a new data model for our CRM, used by around 100 people. Thanks for everything!

Daudruy, B. Head of RevOps, Tomorro

Excellent

Grégoire fully understood our organization's needs and provided invaluable advice on the architecture of our CRM.

Lefebvre, D. Marketing Director, Mon Spécialiste Auto

A trusted HubSpot partner since 2022

We have been working with Grégoire and HS Simple since 2022, and this collaboration has always taken place under excellent conditions. Over the years, Grégoire has supported us on numerous HubSpot-related topics, both for one-off needs and for advice on more complex issues. We have particularly appreciated his professionalism, his mastery of the tool, and his ability to quickly understand our needs in order to propose relevant solutions tailored to our environment. Grégoire is also a very available, responsive, and pleasant person to work with. Even when our requests require additional research or the involvement of several stakeholders, he consistently demonstrates attentiveness, a knack for explaining things clearly, and genuine commitment to helping us move forward. Beyond his technical skills, we particularly value the relationship of trust we have built with him since 2022. Grégoire is a reliable and dedicated partner, whom we recommend with great confidence to any company looking for professional, high-quality support on HubSpot.

Krawczyk, S. Market Research Manager, iObeya

01 · The agency

Your portal,
finally tidy.

HS Simple is a one-person Gold Partner agency. I set up, migrate, clean and automate HubSpot for teams who want a senior on every call and nobody in between.

  • Setup & migration
  • Portal audit & cleanup
  • Automation & reporting
  • Team training
  • Integrations
See all services
Pipelines
Data
Automation
Reporting

02 · The channel

Greg the HubSpot Guy.
Learn it before you buy it.

Weekly deep dives on workflows, properties, reporting and Claude × HubSpot. Watch a few, fix your own portal, come back if you want a hand.

How to Use HubSpot Workflows – Step-by-Step Tutorial for Beginners (2026)
Connect Claude to HubSpot in 2 Clicks (How to run your HubSpot with AI)
Understand the HubSpot CRM structure in 7 minutes

03 · The software

If you can’t see it, you can’t trust it.

I built Untanggy after one too many “why did that contact get three emails?”. It maps every workflow, property and list in your portal into one dependency graph, and tells you what breaks before you touch production.

Read-only OAuth 30-second setup Free for 1 portal
Connect your portal, free

Show me your portal.
I’ll tell you what I see.

Book a free 30-min call No slides. No pitch. Just your portal on screen.
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