SUM Digital

Your sales and marketing don’t have to be complicated

Generating meaningful leads and aligning your sales and marketing departments whilst navigating the digital world is not easy. Our dedicated Growth Marketing Team helps B2B businesses like yours improve every aspect of their commercial process.

What interferes with your growth?

Failure to generate sufficient actionable leads
Sales and marketing are misaligned
Absent or substandard marketing, design, development, and/or CRM skills
Inadequate commercial strategy
Insufficient execution strength

Growth Solutions

Whether you need a marketing team or HubSpot expertise, we’ll help you grow your business, attract customers, and streamline operations.

Growth Marketing Team

From strategy to execution; our complete growth marketing team will help your business grow. No nonsense — just a proven approach, the right platform, and a team that gets the job done.

HubSpot

As a HubSpot Platinum Partner and experienced user, we have successfully implemented CRM systems, automated sales and marketing processes, and optimized customer journeys for numerous businesses. We help your business run more smoothly.

Meet the Team

We excel at developing commercial strategies, driving growth marketing, and implementing HubSpot CRM. We also specialize in visual design and building websites with HubSpot.

Meet the SUM Team

Paul Luceño

HubSpot Developer

Diederik Gerbranda

CEO, Growth Strategist

Coleen Yuson

Growth Designer, UX/UI

Jurre Blaauw

CCO, Growth Strategist

Haley Jansen

Creative & Visual Design Lead

Boudewijn Dekker

HubSpot Lead, Growth Marketer

Val Bonite

Growth Engineer

What our clients say about us

SUM Digital has been our trusted partner for over four years now. Their growth expertise has transformed our business, streamlined our processes and positioned us for success. From HubSpot implementation to complete rebranding; their commitment to our growth shines through in every project.

René Jongen | Partner RevelX

Three steps to grow your business

Discover

We start by learning about your current strategies, spotting gaps, and setting a clear growth plan.

Develop

Using your insights, we create a strategy that ties together marketing, sales, and tech to drive consistent growth.

Execute

We put the plan into action. We take full ownership of execution, so you can focus on your business while we drive your growth.

When Jurre and Diederik founded SUM Digital more than 10 years ago, they brought together their individual skills in marketing, sales and technology. This was a unique opportunity for them, and a chance to help companies unify their marketing and sales departments. By not treating those as separate entities, they focused on the bigger picture. This way, they have continued to ensure greater business success for their clients ever since.

Read the SUM Growth Playbook

RevelX | Consultancy

"Results in numbers are great, but that is not all. The fact that we have managed to implement a Growth Engine which now works almost fully automatically, gives us the confidence that a future proof solution was put into place."

Archie | SaaS

Since the '80s, CRM provider Archie has been handling its own marketing. But in 2020, it was time for a boost. Time for a well-oiled online marketing machine. Evelyn Zandstra, MarCom Team Manager, says, "It's like SUM is paving the way for us."

Feltest | Paper Industry

For enticing leads, Feltest found a solution in HubSpot. Marcel: “HubSpot gives us so many new opportunities to try out. Marketing automation and setting up email campaigns for cross-selling after a sale is child’s play now. And it allows us to have marketing and sales work effectively together.

SUM Digital in action

Read all customer cases

How to make your content convert?

Content? Check. They have plenty of it at the management consultancy firm RevelX. But converting their content remains a challenge. That is why, during the last four years, SUM Digital and the RevelX team explored what works well and what does not. Potential customers can now easily find their way to innovative power.

+7000

Downloads of the Playbooks.

+2000

Participants of the Innovation Webinar.

How do you sell a niche product all over the world?

Three-thousand-seven-hundred… Technology supplier Feltest has an exact number for all his potential customers. But how do you market a niche product within a niche market? Together with owner and inventor Marcel Lensvelt, we work on gaining 3700 customers.

425%

More generated leads.

60%

Increase in SEO ranking.

More revenue, less chaos