How Autonomi cut lead sourcing from 15 hours to 30 minutes

Meet Autonomi

Autonomi is an AI automation company founded by Issac Hicks, built around the need to invest time and processes in strengthening sales and marketing infrastructure for growth-stage organizations.  

When you're in growth-stage, you'll find more leads than ever come in, but the systems to handle them rarely work. 

That's where Autonomi steps in, helping founder-owned businesses to build the operational infrastructure that lets them scale without hiring countless heads. 

Issac's team runs a signal-based outbound system: they watch job boards and acquisition announcements to identify companies at exactly the right moment, then reach out with messaging calibrated to the specific reason that the organization needs to act now. 

Hunter's API is the layer that makes the contact enrichment side of the system work.

The challenge

Autonomi's outbound process depends on reaching specific people at specific companies at the right time. To do that at scale, you need verified email addresses - fast and in volume. 

Before Hunter, Issac's team tried everything: building custom scrapers, pulling contact information from Google Maps, direct outreach on social media profiles, LinkedIn commenting. 

As an AI company, they could build their own data pipelines, but the data they had sourced was unreliable.

"A lot of contact information that is on Google is surprisingly out of date, which you would think is like, why would you have your main ad out of date? But pretty much half the people do, which is crazy."

Issac Hicks, Founder, Autonomi

That drained time. 

For every batch of a thousand leads, the team needed verified email addresses - and sourcing them manually or through their own scraping infrastructure meant hours of work before a single outreach sequence could run. 

The scale they were targeting made the manual approach simply incompatible with the system they were trying to build.

The solution

Issac integrated Hunter's API directly into Autonomi's lead pipeline. 

The result is a fully automated enrichment step: his signal-based system identifies a batch of target companies and contacts, a script hits the Hunter API, and verified email addresses are appended to every record before they enter the outbound sequence.

• When a triggering event is detected - a job posting, an acquisition, a relevant signal - Autonomi's system identifies the relevant contacts at that company. Hunter's API then enriches those records with verified email addresses, all without manual intervention.
• Issac uses Hunter’s email verification to ensure only addresses that have been verified are added to the outbound pipeline. This protects the sending domains and keeps bounce rates tightly controlled across all active sequences.
• Hunter's data feeds directly into Woodpecker, the email sending tool Autonomi uses for their sequences. 

For Issac, the key reason to use Hunter rather than build a comparable enrichment layer in-house is the validation. 

Building reliable email validation from scratch is one of the hardest parts of any automated system - Hunter handles it natively, and the API exposes it with a single call.

"The Hunter API allows for a very seamless, high-fidelity method for gathering the emails so that you don't have to create some big validation process on your own, because building validation processes is the hardest part of building anything automated." 

Issac Hicks, Founder, Autonomi

The results

Sourcing verified email addresses for a thousand leads would take 10-15 hours. With Hunter's API, Issac presses play on a script and comes back in half an hour.

"If we're going to do, say, a thousand leads and we're going to look up a thousand lead emails, I mean, that's 15 hours of work to find all of that information. Now we use the Hunter API and there's a script on my computer and I press play and then I go on about my day and come back in half an hour."

Issac Hicks, Founder, Autonomi

The data quality translates directly into deliverability. 

Running only Hunter-verified addresses through their outbound sequences, Autonomi consistently achieves a sub-2% bounce rate on outreach email - a number Issac says he hasn't been able to reach any other way. 

Protecting the sending domain is non-negotiable when outbound is a core part of the pipeline; Hunter's verified data is what makes it possible.

"Our bounce rate is sub-2% off of the data that we get that's fully verified, which I haven't been able to do in any other way."

Issac Hicks, Founder, Autonomi

The takeaway

For a developer-first team building automated outbound infrastructure, Hunter's API does what no in-house solution can do without significant engineering investment: it provides reliably validated contact data from a single API call. 

Hunter is Autonomi’s enrichment layer that changes the economics of automated lead sourcing. 

When the data is reliably validated at the point of collection, everything downstream - the sequences, the sending reputation, the conversion rates - runs better. As Isaac says:

"Being able to get data that is reliably validated directly from a single call rather than having to build out a validation process yourself - that changes the game."