Sourcing & prospect data
Tool
Cost
Our take
LinkedIn Sales Navigator
Core
€99 /seat/mo
Non-negotiable. Best source for verified people data and account info. Boolean search beats Apollo for finding niche roles.
Apollo.io
Core
€99 /seat/mo
Volume sourcing + email enrichment in one. Data quality varies by region (great US, mediocre NL). Use as sourcing, not primary verifier.
PhantomBuster
Use case
€56 /mo
For LinkedIn search export and Sales Nav scraping. Reliable, simple. Skip if you only need 1-2 exports/month.
Google Maps + Outscraper
Niche
~€50 /mo variable
For hospitality, retail, local services ICPs. The "unreachable ICP" trick from the Jamezz case study.
Apify
Niche
Variable
Custom scrapers when standard sourcing fails (industry directories, association sites, niche marketplaces).
Enrichment & orchestration
Tool
Cost
Our take
Clay
Core · Partner
€349 /mo Pro
Our enrichment + orchestration spine. Waterfall enrichment, Claygent for AI scraping, signal aggregation. We are a Clay Solutions Partner.
Findymail
Waterfall
€69 /mo
First step in our email waterfall. Best hit rate for personal emails (small business owners, founders without corp setups).
Datagma
Waterfall
€89 /mo
Second-step waterfall. Strong in EU markets where Apollo lags. Also does phone enrichment we sometimes use.
Hunter
Verification
€49 /mo
Final verification step in the waterfall. Catches what others miss, lower false-positive rate than alternatives.
Sending & deliverability
Tool
Cost
Our take
Instantly
Core · Expert
€297 /mo Hyper
Cold email infrastructure. Unlimited inboxes, built-in warmup, sequence orchestration. We are an Instantly Certified Expert.
Domain providers
Infrastructure
~€100 /mo variable
Cloudflare or Namecheap for alternate sending domains. 2-3 domains per client. Renews annually but spread monthly here.
Google Workspace / Microsoft 365
Infrastructure
~€100 /mo per client
2 inboxes per domain for cold sending. Google for most, Microsoft for clients where their primary is M365.
CRM & automation
Tool
Cost
Our take
Close CRM
Core
€109 /seat/mo
Our internal CRM. Pipeline management, reply handling, call/email tracking. Closed-friendly API for Clay integration.
n8n (self-hosted)
Automation
~€20 /mo hosting
Workflow automation between Clay, Close, Instantly. Self-hosted on Hetzner for cost. Cron jobs, webhooks, custom logic.
Neetocal
Meetings
€29 /mo team
Calendly alternative. Cheaper, faster booking widget, no Calendly bloat. Works fine for B2B.
Slack
Internal
€60 /mo team
Internal comms + client channels. Slack Connect for shared workspaces with clients.
AI & agents
Tool
Cost
Our take
Claude (Max plan)
Core
€100 /mo
Primary AI for sales + copy + automation. Claude Code for engineering work. Used daily across team.
ChatGPT Pro
Backup
€20 /mo
Cheap backup. Useful for image gen and quick lookups. Not our primary anymore.
Anthropic API + OpenAI API
Inside Clay
Variable
Used inside Clay Claygent prompts. Pay-per-token, scales with campaign volume.
Analytics, infra & misc
Tool
Cost
Our take
Vercel (hosting)
Core
€20 /mo Pro
Hosts closedin.io, internal dashboards, partner login portals. Web Analytics and Speed Insights included.
Supabase
Backend
€25 /mo Pro
Postgres + Auth for internal tools. Partner login portal runs on Supabase.
Fireflies
Meetings
€19 /seat/mo
Meeting transcripts. Auto-attaches to Zoom/GMeet, dumps to Notion. Saves hours per week on note-taking.
Moneybird
Finance
€20 /mo
Dutch accounting. Invoicing, expenses, tax reporting. Compulsory for NL businesses, also genuinely good.
Beehiiv
Newsletter
€39 /mo Pro
Our newsletter platform (closedins-newsletter.beehiiv.com). Recommendations + boosts for growth.
Total monthly stack
~€2,750 /mo