Find leads that are
Discover the hottest leads and automate outreach at your fingertips.
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Built by a team from
Why teams switch
Static lists are broken.
Signals are the new unit of outbound.
Fully Managed
NewWe’ll run your entire outbound
No tools to learn, no campaigns to manage. Our team works alongside you week after week to build, refine, and optimize your outbound pipeline until it works.
White-glove service. No contracts. Cancel anytime.
We discover your leads
Cellstack finds companies that match your ICP and surfaces buy signals with cited sources.
Ideal Customer Profile
Target Persona
Signal Preferences
We find the right person
Decision-makers with verified emails. Personalized outreach written from real signal data.
Acme Corp
94%Developer Tools · Series B · 280 employees
Source: TechCrunch, Feb 2026
Source: LinkedIn, Mar 2026
Sarah Chen
VP of Engineering
Draft Outreach
Hi Sarah, congrats on the Series B. With Acme scaling the engineering team, I thought you might be exploring solutions for...
We research every signal
Discover company signals based on your ICP. Funding, hiring, product launches, all surfaced with sources you can verify.
| Name | Company | Signal | Match | Timing |
|---|---|---|---|---|
| Sarah Chen | Acme Corp | Series B Funding | 94% | Hot |
| James Liu | Nexus Inc | New CTO Hired | 87% | Hot |
| Maria Santos | Vortex Labs | Product Launch | 82% | Warm |
| David Park | Stratos AI | Office Expansion | 76% | Warm |
| Emily Ross | CloudBridge | Tech Stack Change | 71% | Cold |
Getting Started
From ICP to outreach in minutes
Describe your ICP
Set up your ideal customer profile, target persona, and signal preferences. No complex configuration.
Cellstack researches
AI analyzes companies against your criteria, scores ICP fit, and surfaces buy signals with citations.
Start reaching out
Review scored leads, verified decision-makers, and personalized outreach ready to send.
Pricing
Simple, transparent pricing
Start with a 7-day free trial. Cancel anytime.
Hobby
For individuals exploring outbound.
Your first 7 days are free
- 10 campaigns per month
- Up to 15 companies per CSV import
- All signals with citations
- Personalized messages
- Writing styles
Founder
For individual founders scaling outbound.
- 25 campaigns per month
- Up to 35 companies per CSV import
- All signals with citations
- Direct founder support
Team
For teams with higher volume needs.
- Everything in Founder
- Custom campaign limits
- Custom CSV import limits
- Custom signal preferences
- Early access to latest features
- Priority support + Slack channel
Fully Managed
Your outbound, handled end-to-end by our team.
- End-to-end outbound execution
- Dedicated team working alongside you
- Weekly strategy calls to refine and optimize
- Hands-on campaign iteration
- Direct Slack channel with our team
- Pay only for qualified leads
All plans include a 7-day free trial · Cancel anytime
Early users are seeing 1-in-7 reply rates from AI-researched cold outreach
Based on early user results
Ready when you are
Start landing demos this week.
Early users are seeing 1-in-7 reply rates from AI-researched cold outreach. See yours in 7 days, free.
7-day free trial · No credit card required