What technologies does OK.app use?

OK.app uses Amazon SES, Outlook, ExactOnline, Microsoft Office 365, Zendesk. View their full technology stack — including all 12 detected tools — on StackWho.

Where is OK.app located?

OK.app is based in Amsterdam, North Holland, Netherlands.

OK.app

Q: Who is the CTO, Tech Lead, Product Manager, Software Architect of OK.app?

Ruben Eijnatten is the CTO, Tech Lead, Product Manager, Software Architect at OK.app. Get verified contact information on StackWho.

ok.app

information technology & services

ok.app

Amsterdam, North Holland, Netherlands

51-200 employees

LinkedIn Profile

About OK.app

loyalty, discount, tickets, cards, mobile wallet, pasjesapp, wallet, pasjes, korting, app, digital marketing, mobile payments, mobile, information technology, it services & it consulting, marketing & advertising, internet, information technology & services, financial services

OK.app's Tech Stack

Decision Makers at OK.app

1 contact

Ruben Eijnatten

CTO, Tech Lead, Product Manager, Software Architect

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12 technologies detected · 1 decision maker

Sales Outreach Angle

Zendesk usage signals a customer support operation. Alternatives, add-ons (AI agents, ticketing automation, CX analytics), and customer feedback tools are strong sales angles.

OK.app's Position in the StackWho Database

• OK.app is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 4,069 companies in North Holland are in the StackWho database.
• 13,765 information technology & services companies are in the 51-200 employee range (same size as OK.app).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does OK.app use?

OK.app uses Amazon SES, Outlook, ExactOnline, Microsoft Office 365, Zendesk, Google Cloud Hosting, and 6 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at OK.app?

StackWho has verified email addresses for 1 decision maker at OK.app. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach OK.app directly for sales, recruiting, or partnerships.

What industry is OK.app in?

OK.app operates in the information technology & services industry, headquartered in Amsterdam, North Holland, Netherlands. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export OK.app's contact data?

Yes. StackWho Pro members can export decision maker contact data for OK.app and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.