AI · Sales Growth
LeadFlow AI
A system that finds ideal-fit prospects across the open web, enriches them in real time, and drafts personalised outreach at scale.
Industry
AI · Sales Growth
Year
2026
Duration
14 weeks
Team
1 product designer, 2 senior full-stack engineers, 1 ML engineer
Results
Outcomes, measured.
12×
Reply rate
Versus the customer's previous template-based outbound.
3.2k
Qualified leads / month
Reaching ICP-fit prospects with verified contact data.
97%
Deliverability
Inbox placement across primary providers.
$1.4M
Pipeline in 90 days
New revenue pipeline attributed to the system in the first quarter.
The challenge
What was broken.
- Cold outbound at scale needs to feel personal — generic 'Hi {first_name}' templates have a sub-1% reply rate and tank sender reputation.
- Lead sourcing was fragmented across LinkedIn Sales Nav, Apollo, ZoomInfo, and bespoke scrapers — each with its own pricing and rate limits.
- Email deliverability is a moving target — domain warming, sender rotation, content filters, and ESP relationship-building all decide whether messages land in the inbox or spam.
Our approach
How we solved it.
- Built a unified prospect graph: ingestion adapters for every source, deduplication, and a continuously-refreshed enrichment layer.
- Designed the message generator as a multi-step LLM pipeline — research → angle selection → draft → personalisation pass — with human-in-the-loop approval gates configurable per campaign.
- Implemented sender-reputation management with domain rotation, warm-up automation, bounce monitoring, and per-domain delivery throttling.
- Used Temporal to orchestrate long-running outreach workflows with retry semantics, time-zoned send windows, and reply detection.
What we built
Concrete deliverables.
Multi-source lead ingestion + dedupe + enrichment graph
Multi-step LLM message generation with style and angle controls
Inbox automation with reply detection and conversation threading
Sender-reputation manager with warm-up and rotation
Campaign analytics with reply, meeting-booked, and revenue attribution
Admin tools for compliance review and sensitive-account flagging
Tech stack
Next.jsGoPostgreSQLTemporalOpenAIRedisAWSClickHouse
“We've spent more on outbound tooling than I'd like to admit. This is the first system that actually moved pipeline.”
VP of Growth
LeadFlow AI launch customer
Services used
The capabilities behind this build.
AI Solutions
LLM agents, retrieval pipelines, and ML integrations that unlock real business leverage — not demos.
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Automation Tools
Internal tools and workflow automation that save teams hundreds of hours every month.
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SaaS Product Development
Zero to revenue. Multi-tenant architecture, billing, auth, dashboards, analytics — done properly.
Read more
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