# closed:in — agency on PartnerHire

> Clay driven GTM systems that scale without extra hands

**Canonical page:** https://partnerhire.com/provider/closedin
**Type:** agency
**Location / serves:** Amsterdam, Netherlands
**Partner tier:** Artisan

## What they do

At closed:in, we help B2B service companies scale their outbound without scaling their team. Think of us as the crew behind the scenes making sure your prospects actually see your emails, open them, and most importantly, book the call.
We build fully done-for-you outbound systems powered by Clay: sharp ICP research, waterfall-enriched lead lists, personalized first-lines, smart automations, and the kind of deliverability setup only people who genuinely enjoy DNS records would bother with. Clay workflows, enrichment wizardry, and multi channel outreach through E-mail, Linkedin and Instagram.
Our campaigns are hyper-targeted, data-backed, and optimized for conversions, not vanity metrics. No spray and pray, no mass-blasting strangers hoping for a miracle. Just clean lists, strong copy, and a system that works quietly and reliably in the background.
If you want more booked calls, fewer moving parts, and an outreach setup that doesn’t fall apart the moment you stop watching it, we have you covered. And yes, we genuinely enjoy all the technical stuff so you don’t have to.

## Tools & platforms

Clay

## FAQ

**What does closed:in do?**

Clay driven GTM systems that scale without extra hands

**What tools does closed:in specialize in?**

closed:in works with Clay.

**Who is closed:in a good fit for?**

closed:in is a good fit for growing businesses that need a team to deliver.

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_Source: PartnerHire. Last updated 2026-06-29T16:24:12.90083+00:00. Verify current details at the canonical page above._