Cold Email Agency Amsterdam | closed:in
Home Case Studies Team Contact Book Meeting
Cold Email Agency Amsterdam

The cold email agency
built for European B2B

closed:in is an Amsterdam-based cold email agency. We build outbound sales systems for B2B service companies in the Netherlands, Belgium and across Europe. Qualified meetings on your calendar within 2-3 weeks.

Book a 30 Minute Call →
50+
B2B clients served
1,000+
Campaigns launched
98%
Deliverability
2-3 wk
To first meeting
Why companies hire us

Outbound, done right
from Amsterdam.

Most cold email agencies sell volume. We sell a system. Every campaign we ship is grounded in clean data from Clay, deliverable infrastructure built on Instantly, and copy that respects the Dutch and European B2B buying culture. The end result is meetings booked.

01

Local market expertise

We know how Dutch, Belgian, German and UK buyers actually read outbound. Tone, brevity, and respect for time. We do not copy-paste US templates.

02

GDPR-compliant by default

B2B legitimate-interest framing, verified business emails, clear opt-outs, no spray-and-pray. Every campaign is set up to be compliant from day one.

03

Clay Solutions Partner

We are an official Clay Solutions Partner and Instantly Certified Expert. The enrichment and infrastructure layers are not outsourced, they are our core stack.

What you get

A full outbound engine,
not just emails.

Deliverability infrastructure

Dedicated sending domains, properly warmed inboxes, SPF/DKIM/DMARC configured, deliverability monitored continuously. The plumbing is the foundation.

Targeted lead lists

Sales Navigator + Clay waterfall enrichment. We build verified, ICP-fit lists with the right buying signals, not bulk scraped data.

Multi-channel sequences

Cold email and LinkedIn outreach combined, with reply handling and meeting booking integrated. Channels reinforce each other, not compete.

CRM and reporting

Replies wired straight into Close, HubSpot or Salesforce. Weekly client reports with reply rates, opportunity counts and pipeline value.

Proof

Real outbound results
for Dutch and European B2B.

Verzendbazen · NL/BE · E-commerce fulfillment

78 opportunities with a 13.9% reply rate

Complete outbound engine built with Clay and Instantly to generate qualified e-commerce leads and create EUR 78K in pipeline.

78
Opportunities
€78K
Pipeline
13.9%
Reply rate
Mistertafel · NL · Home interior

96 retail opportunities in under 30 days

First B2B campaign for a B2C founder. Outbound engine built from scratch, achieving 35%+ reply rate and 10% opportunity rate from 900 contacts.

96
Opportunities
30d
Timeline
35%
Reply rate
Frequently asked

Questions, answered.

What does a cold email agency in Amsterdam actually do?
A cold email agency builds and runs outbound sales campaigns on your behalf. closed:in sets up sending domains and inboxes, builds targeted lead lists with Clay, writes copy that matches the Dutch and European market, runs multi-step sequences through Instantly and wires replies straight into your CRM. The goal is qualified meetings in your calendar.
Why pick an Amsterdam-based cold email agency over a US one?
European GDPR rules, Dutch and Flemish writing conventions, time zones and local buying behaviour are very different from the US market. An Amsterdam-based agency like closed:in knows the local ICP, writes in the language your prospects actually use, and understands NL/BE B2B sales cycles.
How much does cold email outreach cost in the Netherlands?
Most managed cold email engagements in the Netherlands run between EUR 3K and EUR 8K per month, depending on volume, languages and CRM complexity. closed:in works on a setup fee plus monthly retainer model, with engagements typically running 3 months minimum.
How fast will I see results from cold email campaigns?
Infrastructure setup (domains, inboxes, warmup, list, copy) takes 2 to 3 weeks. Most closed:in clients book their first qualified meeting within 2-3 weeks of launch. Documented results include 78 to 247 opportunities per engagement across NL, BE and the wider European market.
Is cold email still legal under GDPR?
Yes, B2B cold email is allowed under GDPR as long as you have a clear legitimate interest, target business email addresses, identify yourself clearly, and include an opt-out. closed:in builds compliant infrastructure as standard and only targets verified B2B contacts.
Do you also handle LinkedIn outreach, or only cold email?
Both. Cold email and LinkedIn are most effective when combined. We run multi-channel sequences where LinkedIn connection requests, DMs and content amplification reinforce email touches. One operator, one strategy, one CRM.
Which industries do you typically work with?
B2B service companies, SaaS founders, recruitment and PE firms, agencies, e-commerce fulfillment, hospitality SaaS, creative agencies and home interior retail. ACVs typically EUR 5K and up.

Ready to launch outbound
from Amsterdam?

Book a 30 minute discovery call. We will review your ICP, current setup and goals, and tell you whether closed:in is a fit.

Book a 30 Minute Call →

1 email per week.
Real outbound tactics from live campaigns.

Free 1-page infrastructure checklist on signup. Built by founders who run cold email daily.

The closed:in playbook Free PDF
Cold email infrastructure checklist + weekly tactics from 1,000+ live campaigns.