Branding and performance agency in The Hague and Breda, formed from Smidswater in 2021
About Think Yellow
Think Yellow is a branding and performance marketing agency with offices at Grote Markt 22 in The Hague and Reduitlaan 25B in Breda. It traces its roots to Smidswater, a Hague agency started in 1970. In 2014 the recruitment firm Employity followed, and in 2016 Smidswater and Employity launched Online Marketeers in Breda to second online marketing specialists to clients. The video and content labels ZOOOM and Hello There joined the group in 2017. In 2021 all of these were brought together under the Think Yellow name. The agency has more than 30 professionals and over 50 years of experience. Its 2026 tagline is 'tech driven, human inspired', which refers to its use of AI alongside staff expertise.
The leadership includes managing director Stoffel Geerards, strategy director Tijs van den Nieuwendijk, client director Bram van Druten, and Dennis Domen as head of performance marketing. Services fall into two groups. Branding covers brand strategy, visual identity and employer branding. Performance covers marketing strategy, performance marketing, content marketing, campaigns and websites. SEO sits inside performance marketing, next to paid search, paid social, conversion optimisation and lead generation. The agency can also supply interim specialists for short or long projects.
Think Yellow has no dental or healthcare marketing page, and it does not describe a specific Google Business Profile or local SEO service. Its value for a dental group lies mainly in brand positioning, recruitment marketing and measured lead campaigns, not in hands-on local search work. It would suit a larger or multi-site group that needs a brand refresh, an employer brand to help hire clinical staff, or a full-funnel campaign. A single practice that mainly wants better map rankings is less of a fit.
The case list has about 40 projects. GGN, a debt collection firm, gained 20% more leads, a 46% lower cost per lead, a 33% higher conversion rate and 61% growth in organic traffic. Transdev reached people 150 times more cheaply with authentic social content. Habeo+ saved 840 hours on more than 300 texts. Kalibra gained 22.4% more branded conversions. Royal Delft grew revenue 14% with performance marketing, and Superfietsen had 57% more branded revenue during its Bike2School campaign. Other clients include Randstad, Odido, Canon Production Printing, Swinkels Family Brewers, Havenbedrijf Rotterdam and Gemeente Den Haag.
Testimonials describe strong employer branding and design work, and the agency has a client rating of 9.2. Logos for Google, Meta, Microsoft, Channable, Leadinfo and Billy Grace appear on the site, and Billy Grace data features in one case. No pricing, packages or contract terms are published. Enquiries go through a contact form.
Think Yellow's Website
Think Yellow at a Glance
| Founded | 2021 |
|---|---|
| Team size | 30+ professionals |
| Headquarters | The Hague, South Holland, Netherlands |
| Other offices | Breda |
| Leadership | Stoffel Geerards (Managing Director); Tijs van den Nieuwendijk (Strategy Director); Bram van Druten (Client Director); Bob Geerards (Director Recruitment and Interim); Dennis Domen (Head of Performance Marketing) |
| Languages | Dutch; English |
| Pricing | Quoted per project · Not published |
| Contracts & reporting | Specialists available for temporary and long-term projects; no published contract terms or packages. |
| Tools & partnerships | Google; Meta; Microsoft; Channable (partner); Billy Grace; Leadinfo |
Dental Marketing Services
- Brand strategy and visual identity
- employer branding and recruitment campaigns
- performance marketing (SEO, SEA, paid social, CRO, lead generation)
- content marketing
- websites
- marketing automation
- interim marketing specialists
Dental Clients & Results
- GGN: 20% more leads, 46% lower cost per lead, 33% higher conversion rate, 61% organic traffic growth
- Transdev: reach 150x cheaper with authentic social content
- Habeo+: 840 hours saved on 300+ texts
- Kalibra: +22.4% branded conversions
- Royal Delft: +14% revenue growth from performance marketing
- Superfietsen: 57% more branded revenue during Bike2School campaign
Why Dentists Choose Think Yellow
- Office on the Grote Markt in The Hague city centre
- Absorbed the Hague agency Smidswater
- Transdev case shows 150x cheaper reach from social content
- Habeo+ case reports 840 hours saved on 300+ texts
- Combines brand strategy with performance campaigns
Key Strengths
- Uses AI-assisted workflows to produce dental treatment copy at scale
- Steers practice campaigns on cost per lead and ROAS rather than clicks
- Gives practices clear dashboards and transparent reports on what works
How the DSA Score Breaks Down
Points earned: 37.6 of 100 (profile 47 × 0.8 + client feedback 0). DSA Score: 88/100
Where Think Yellow Is Listed
Questions Dentists Ask About Think Yellow
Does Think Yellow specialise in dental marketing?
No. It has no dental or healthcare page and names no dental clients. Its work centres on branding, employer branding and performance campaigns for corporate and public-sector clients.
Can Think Yellow help a dental group recruit staff?
Employer branding is one of its core services, with cases for Canon Production Printing, Swinkels Family Brewers and Grant Thornton. It also grew out of a recruitment business, Employity.
What results has it published for lead generation?
GGN gained 20% more leads, a 46% lower cost per lead and 61% organic traffic growth. Other cases include Royal Delft at +14% revenue and Kalibra at +22.4% branded conversions.
Where is Think Yellow based?
It has offices on the Grote Markt in The Hague and on Reduitlaan in Breda. The agency was formed in 2021 from Smidswater, Employity and Online Marketeers.
Are prices published?
No. Pricing and contract terms are not published, and work is scoped after first contact.
Reviews of Think Yellow
No reviews on this site yet. Have you worked with Think Yellow? Your review helps other dentists choose.