Development of a dynamic directory of RGE craftsmen
Hellio is a French company specializing in energy efficiency solutions. Founded in 2008, it supports a range of sectors, including individuals, businesses, local authorities and building ...
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Our case studies: high-impact HubSpot projects
From design to CRM, see how IEA transforms business challenges into measurable results
As a HubSpot-focused agency, IEA helps companies design, develop, and optimize high-performing digital experiences.
From custom websites to CRM and marketing automation, our case studies showcase how we deliver scalable solutions that drive growth and performance.
What our clients say
Trusted by more than 50 companies for their HubSpot projects
Since 2022, more than 50 companies have trusted if/else agency to design and develop their HubSpot projects.
Ready to become our next success story?
Alexandra Desbat
Digital Marketing Specialist - Vade
We worked with Luc and Garance on 2 separate projects: the optimization and design of the corporate site and the migration + redesign of another site. During these 2 projects, they demonstrated their mastery, rigor, complementarity and professionalism.
Camille Collin
B2B Acquisition Project Manager - HelloWork
We called on If/Else to redesign our site and develop a dynamic calendar. Everything turned out just the way we wanted it, and we're very happy with the result - it makes our work so much easier!
Julie Machillot
CEO & founder - Storyfox
We worked with if/else agency to redesign the theme of our corporate website. We're very satisfied with the result. The collaboration was seamless, they have real expertise and were proactive in making our project a success.
Julie Pravaz
Project Manager - Tiime
A highly skilled team that is close to its clients. We regularly entrust them with Hubspot developments, and they always coordinate projects superbly. It's a pleasure to work with Garance, Luc, and Christopher.
Amrinne Laudé
Founder - Maison Tehsin
[...] A big THANK YOU to the whole team! Thank you for your professionalism, creativity, and responsiveness! Special mention to Garance, who was PROACTIVE in responding to all my requests day and night... If/else Agency, a true strategic partner for even the craziest projects!
Camille Folliot
COO & Partner - Nile
Luc and Garance have worked with us on a number of website development projects, from mock-up design to online launch. Their mastery of the HubSpot CMS, their rigor and professionalism are a real plus when it comes to optimizing website performance. Skills that are rare on the market!
Thierry Calederón
CEO & HubSpot CRM Specialist - MMIO
Very good collaboration with the IEA teams on the HubSpot CMS. We had to integrate a booking engine from a third-party business tool. Delivery on time and quality on target. A job well done.
Loïc Schemel
Head of SEO & CRM - Swapn
[...] We have no hesitation in recommending If/Else Agency, who have supported us with exemplary professionalism.
Their technical expertise, combined with a genuine willingness to listen, guarantees solutions tailored to our needs.
A big thank you to the If/Else team for their responsiveness and invaluable support on a daily basis!
Xavier Lagrange
Executive Education Manager - EFREI
[...] The team demonstrated excellent listening skills and a keen understanding of our challenges. We highly recommend if/else agency for the quality of their support, their professionalism, and their ability to integrate effectively into a project team.
Nicolas Deswarte
CMO - Thiga
I've finally found my HubSpot CMS partner !
After a very well executed site redesign, I'm happy to have finally found my strategic partner to serve up the web experiences of my dreams! Excellent communication, very good planning, good advice and real support for our web developments. I highly recommend IF/Else.