Skip to content
All case studies

How Chatbase got an outbound engine of its own, built from scratch in two weeks

Chatbase had no outbound. In two weeks Revgrowth built the whole engine from the domains up, with 100 inboxes and a campaign for every market, company size and inbox provider. It drew 29 interested replies in its first 45 days, and the infrastructure stays with Chatbase for its next campaign.

Market
AI agents for customer service and support
They built our outbound from scratch with infrastructure, workflows, and 30 leads in 45 days.
Humphrey SuHead of Growth at Chatbase
From no outbound to the first email
2 weeks
Inboxes on 50 domains, built from scratch
100
Campaigns, one per market, size and inbox provider
45

Chatbase had no outbound engine to reach the businesses that weren't finding it.

Chatbase builds AI agents that answer customer questions over chat, email, WhatsApp, Slack and more, trained on each business's own content. Over 10,000 businesses use it, and anyone can start a free trial on its site.

A free trial brings in the businesses already looking for an AI agent. Chatbase wanted the ones that weren't, starting with hotels and gyms, and it had nothing to reach them with.

The job was an engine Chatbase could keep, proven on its first markets.

What we built.

We built every piece from scratch, and set it up so each market could be measured on its own and run again.

  • ScaledMail
  • Google Workspace
  • EmailBison
  • Clay
  • Google Maps

  1. Context

    AI agents that answer customer questions.

  2. Infrastructure

    50 domains and 100 inboxes, sending in two weeks.

  3. Campaign structure

    One campaign per market, company size and inbox provider.

  4. Lists

    Named managers and owners, then map listings.

  5. Messaging

    Two short steps, written for each market.

  6. Provider split

    Google inboxes replied four times as often as Microsoft.

  7. Still in place

    The infrastructure stays with Chatbase.

From new domains to an interested reply.

Every market got its own inboxes and campaigns, split by company size and inbox provider. The domains and inboxes stay in place for the next market.

The Chatbase playbook, mapped end to end
100%

An engine Chatbase keeps, and 29 interested replies in its first 45 days.

The engine was sending two weeks after the first inbox went up, and from January 23 to February 26, 2026, 29 replies came back interested. Hotel general managers, owners and directors of rooms asked for a demo, pricing, a one-page breakdown or a deck, and a hotel group's VP of operations proposed a meeting time in the first reply.

Inboxes built on 50 domains
100
Campaigns across five markets
45
Domains still live in November 2026
50 of 50
Interested replies in 45 days
29
People contacted
26,352
Replies on Google vs Microsoft inboxes
4x

More client results.

Different markets, the same system underneath.

Read the case study

How Zuper built $120K+ in pipeline in 60 days from a TAM scraped from scratch

Pipeline in 60 days
$120K+
Of Zuper's total new pipeline
~25%
Reply-to-interested rate (113 of 171)
66.08%
  • Cold email
Chris RiesHead of Growth Marketing, Zuper