How Vanderbuild Saves 4+ Hours Per Client and Hits 99.3% Deliverability
Vanderbuild is a GTM engineering agency run by Founder and CEO Mateusz Sekta. It builds outbound and CRM data systems for SaaS companies, software houses, VCs and agencies across DACH, the UK and the US.
Before switching to the Forge Stack, Vanderbuild ran client outbound across three different vendors. Infrastructure depended on automations the team had built in-house. MCP connectors dropped often, LinkedIn accounts needed reconnecting whenever a client changed SDRs, and new operators lost time learning where everything lived.
The goal was simple. Spend less time on setup, whether onboarding a new client or a new team member.
“Forge gave us stable deliverability and one product that runs our full outbound workflow.”
Why Vanderbuild Chose The Forge
Vanderbuild wanted infrastructure, sequences and reply handling working together in one tool that still connects to the rest of its stack through API and MCP.
On the Forge Stack, client infrastructure lives in one place, multichannel outbound is priced on usage instead of seats, and real people on the Forge team answer support tickets.
The Results
Vanderbuild moved its client campaigns onto Primeforge, Warmforge and Salesforge. Here's what changed after the switch:
The Takeaway
With the Forge Stack, Vanderbuild runs its proven outbound playbook on a single stack, onboards clients faster and keeps deliverability steady.
Here's what Mateusz had to say about managing outbound on the Forge Stack: “The Forge MCP lets us run outbound from Claude without switching tools. Campaign management got faster.”
Every Aspect of Successful Outreach, Covered ✅
