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closed:in
Accepting new clients
Core
Amsterdam
Menu
CRM Platform
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Ask AttioSearch and create with AI
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AINative to your CRM
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Data modelSync and enrich your data
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Productivity & collaborationContext for your team operations
Automations
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WorkflowsAutomate any process
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SequencesPersonalized outreach
Insights
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Call IntelligenceRecord and analyze meetings
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ReportingInsights in real time
Ecosystem
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Developer PlatformBuild with the Attio API and SDK
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Apps & integrationsConnect all your favorite tools
Get started
- Attio 101
- Hire an expert
- Talk to sales
Awards
- Most Innovative B2B GTM Engineering Agency 2026
- Best B2B Outbound Infrastructure & GTM Engineering Agency -Netherlands 2026
Special offer
Resources
Supported Regions
- Americas
- EMEA
- APAC
Expert Location
- EMEA
Languages
- Dutch
- English
Expert Tier
- Core
GTM engineering agency from Amsterdam. We build the outbound engine around Attio: signal-based lists in Clay, cold email and LinkedIn outreach, and every positive reply landing in your CRM.
closed:in is a GTM engineering agency based in Amsterdam. We build and run outbound systems for B2B companies across Europe, and we connect them to the CRM so your sales team works from one source of truth.
"I really like your hands-on approach. Digging in, trying to really understand the business and then finding creative ways to reach customers."
Mikel Palokaj
Founder at True Performance Network
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