We Build Autonomous Outbound Engines That Replace Manual SDR Work.
Stop forcing your team to be data-entry clerks. We engineer Clay, n8n, and HubSpot infrastructures that research, enrich, and engage your market on autopilot.
We Work Inside Your Existing Stack
The Core Infrastructure
The Core Infrastructure
Waterfall Enrichment
We replace "spray and pray" lists with Clay workflows that cascade through 10+ data sources to find valid emails, mobile numbers, and hiring signals.
Waterfall Enrichment
We replace "spray and pray" lists with Clay workflows that cascade through 10+ data sources to find valid emails, mobile numbers, and hiring signals.
AI Personalization
Integration of OpenAI (GPT-4) and Claude to analyze prospect data and write unique "P.S." lines that prove you did your research.
AI Personalization
Integration of OpenAI (GPT-4) and Claude to analyze prospect data and write unique "P.S." lines that prove you did your research.
Deliverability Ops
Setup of secondary domains, DKIM/DMARC authentication, and inbox rotation (Smartlead/Instantly) to keep you out of spam folders.
Deliverability Ops
Setup of secondary domains, DKIM/DMARC authentication, and inbox rotation (Smartlead/Instantly) to keep you out of spam folders.
CRM Sync & Routing
We don't leave data in spreadsheets. Interested leads are automatically synced to HubSpot, scored, and routed to your closers.
CRM Sync & Routing
We don't leave data in spreadsheets. Interested leads are automatically synced to HubSpot, scored, and routed to your closers.
Waterfall Enrichment
We replace "spray and pray" lists with Clay workflows that cascade through 10+ data sources to find valid emails, mobile numbers, and hiring signals.
AI Personalization
Integration of OpenAI (GPT-4) and Claude to analyze prospect data and write unique "P.S." lines that prove you did your research.
Deliverability Ops
Setup of secondary domains, DKIM/DMARC authentication, and inbox rotation (Smartlead/Instantly) to keep you out of spam folders.
CRM Sync & Routing
We don't leave data in spreadsheets. Interested leads are automatically synced to HubSpot, scored, and routed to your closers.
A Clear Way to
Automate Your Outbound
A Clear Way to
Automate Your Outbound
We don't sell hours. We sell a turnkey system installed in 14 days.
Week 1: Infrastructure & Data
We set up your domains, warm up the inboxes, and build the Clay enrichment tables based on your ICP.
Week 1: Infrastructure & Data
We set up your domains, warm up the inboxes, and build the Clay enrichment tables based on your ICP.
Week 1: Infrastructure & Data
We set up your domains, warm up the inboxes, and build the Clay enrichment tables based on your ICP.
Week 2: The "Brain" Logic
We program the n8n workflows that connect your data to your AI models, ensuring every email looks handwritten.
Week 2: The "Brain" Logic
We program the n8n workflows that connect your data to your AI models, ensuring every email looks handwritten.
Week 2: The "Brain" Logic
We program the n8n workflows that connect your data to your AI models, ensuring every email looks handwritten.
Handover & Training
We transfer the assets to your account, provide a library of Loom SOPs, and train your team to run the engine.
Handover & Training
We transfer the assets to your account, provide a library of Loom SOPs, and train your team to run the engine.
Handover & Training
We transfer the assets to your account, provide a library of Loom SOPs, and train your team to run the engine.
Stop Hiring Humans
To Do Robot Work.
You don't need another SDR. You need better architecture.
"The old playbook was hiring three SDRs to make 50 calls a day. It’s expensive, prone to burnout, and inefficient.
GrowthStack engineers a background system that does the research, verification, and initial outreach of a 5-person team -without the overhead.
Your team steps in only when a prospect replies: 'I'm interested.'"
Stop Hiring Humans
To Do Robot Work.
You don't need another SDR. You need better architecture.
"The old playbook was hiring three SDRs to make 50 calls a day. It’s expensive, prone to burnout, and inefficient.
GrowthStack engineers a background system that does the research, verification, and initial outreach of a 5-person team -without the overhead.
Your team steps in only when a prospect replies: 'I'm interested.'"
Pipeline Performance
Pipeline overall score
0
0
Pipeline Score
Updated Nov 25, 2025
Pipeline Performance
Pipeline overall score
0
Pipeline Score
Updated Nov 25, 2025
Built entirely on your own accounts. You own the IP.
Built entirely on your own accounts. You own the IP.
We support your outbound motion with clean data flow, faster enrichment, and simple automations that help your team reach the right people sooner.
Use Clay for enrichment, scoring, and signals without adding complexity. We build clean tables and automations that support your GTM playbook.
We repair workflows, clean up fields, rebuild routing, and create follow-up paths your reps can trust. A smoother GTM system starts with a clean CRM.
We repair workflows, clean up fields, rebuild routing, and create follow-up paths your reps can trust. A smoother GTM system starts with a clean CRM.
We help you connect Instantly to your GTM setup so lead creation, tracking, and follow up stay consistent across your entire workflow.
We support your outbound motion with clean data flow, faster enrichment, and simple automations that help your team reach the right people sooner.
Use Clay for enrichment, scoring, and signals without adding complexity. We build clean tables and automations that support your GTM playbook.
We repair workflows, clean up fields, rebuild routing, and create follow-up paths your reps can trust. A smoother GTM system starts with a clean CRM.
We help you connect Instantly to your GTM setup so lead creation, tracking, and follow up stay consistent across your entire workflow.
Unlock the Full Potential of Your Team
With flexible pricing plans, you can choose the option that best fits your needs and budget.
Unlock the Full Potential of Your Team
With flexible pricing plans, you can choose the option that best fits your needs and budget.
The Audit
For teams needing a clear plan.
Full audit of current HubSpot & Data stack
Identification of leaks and process gaps
Visual architecture map of future state
Custom tool & tech stack recommendations
30-Minute strategy review call
US$497
one-time
Most Popular
Autonomous Outbound System
14-Day Turnaround
Complete Clay & n8n Waterfall Setup
3 Secondary Domains & Deliverability Config
AI-Copywriting & Personalization Integration
HubSpot 2-Way Sync & Lead Routing
Team Training, SOPs & Asset Handover
US$4950
one-time
Optimization & Maintenance
Keep your engine running at 100%.
24/7 Workflow Monitoring & Bug Fixes
Monthly Data List Refresh & Cleaning
A/B Testing on Copy & Sequencing
Custom ROI & Pipeline Reporting
Priority Slack Support & Strategy
US$1500
billed monthly
The Audit
For teams needing a clear plan.
Full audit of current HubSpot & Data stack
Identification of leaks and process gaps
Visual architecture map of future state
Custom tool & tech stack recommendations
30-Minute strategy review call
US$497
one-time
Most Popular
Autonomous Outbound System
14-Day Turnaround
Complete Clay & n8n Waterfall Setup
3 Secondary Domains & Deliverability Config
AI-Copywriting & Personalization Integration
HubSpot 2-Way Sync & Lead Routing
Team Training, SOPs & Asset Handover
US$4950
one-time
Optimization & Maintenance
Keep your engine running at 100%.
24/7 Workflow Monitoring & Bug Fixes
Monthly Data List Refresh & Cleaning
A/B Testing on Copy & Sequencing
Custom ROI & Pipeline Reporting
Priority Slack Support & Strategy
US$1500
billed monthly
The Audit
For teams needing a clear plan.
Full audit of current HubSpot & Data stack
Identification of leaks and process gaps
Visual architecture map of future state
Custom tool & tech stack recommendations
30-Minute strategy review call
US$497
one-time
Most Popular
Autonomous Outbound System
14-Day Turnaround
Complete Clay & n8n Waterfall Setup
3 Secondary Domains & Deliverability Config
AI-Copywriting & Personalization Integration
HubSpot 2-Way Sync & Lead Routing
Team Training, SOPs & Asset Handover
US$4950
one-time
Optimization & Maintenance
Keep your engine running at 100%.
24/7 Workflow Monitoring & Bug Fixes
Monthly Data List Refresh & Cleaning
A/B Testing on Copy & Sequencing
Custom ROI & Pipeline Reporting
Priority Slack Support & Strategy
US$1500
billed monthly