AI Copilot & multichannel outreach: How Centaur reduced bounce rates by 72%

Centaur’s story so far

• 6x higher replies with Duo
• 4.4x higher interest with top Duo signal
• 72% reduction in bounces

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Background

This is the story of how a team of AI innovators shook up their sales operations to become more competitive in less than one
year, finding their perfect solution in Amplemarket’s all-in-one AI platform.

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The challenge

Like many growing AI companies, Centaur had a cutting-edge product but knew they had work to do in improving the precision and effectiveness of their prospecting and outreach. They worried they were losing potential deals because their unique selling points weren’t reaching the right people – especially on LinkedIn and email.

Legacy sales processes and deliverability challenges were limiting their ability to find and connect with their ideal prospects.

AI Solutions Specialist Andreas George explains to us:

“Data annotation is something that basically every AI model kind of needs, and there are plenty of solutions in the medical space. But the way that we do it is very different to the rest of the annotation companies out there.”

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Andreas describes how the hiring of a new enterprise Account Executive (AE) and Vice President of Sales in mid-2024 triggered a concerted re-assessment of the company’s outbound sales process to become more competitive.

“These developments led the charge to revamp our sales system and to get some sort of tool to expand our reach. That’s when we started evaluating a lot of tools in the space.”

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The solution

With no shortage of tools to choose from, Andreas and the Centaur team were looking for a solution that would enhance their heavily multichannel approach in the two areas that mattered most for engaging their ICP: email and LinkedIn.

Andreas explains why Amplemarket’s LinkedIn extension features stood out:

“I noticed that a lot of the other competitors’ capabilities with LinkedIn were not quite there in terms of integrating with LinkedIn, having all of the analytics, and the on-platform capabilities like being able to export leads on specific posts and stuff like that. That was definitely a differentiator.”

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Being able to pull leads from relevant posts and ads on LinkedIn allows the Centaur team to capitalize on in-market leads. With Amplemarket, they realized they could identify and engage the exact individuals showing interest in similar solutions – adding qualified prospects to their own pipeline.

On top of this, Centaur managed to make their outreach even more compelling and competitive by combining their newly refined multichannel outbound with new AI-powered intent signals.

Andreas was an early user and tester of Duo Copilot, and as he explains, using the AI agent to help him in all his daily prospecting activities soon became second nature:

“I think Duo is really good. The AI Copilot has
come a long way since our early tests on it and
the emails it produces are extremely high quality.”

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“Just the other day, for example, I was showing our new AE Duo’s email capabilities. The first email that it came up with was the one I sent. I didn't even have to make any changes!”

The impact of Amplemarket’s built-in deliverability support became clear as soon as he compared his outreach metrics 
to other tools:

“Prior to this, we’ve tried a lot of different sequencing sort of tools, and we were trying out an alternative right before exploring Amplemarket. My delivery and open rates are definitely a lot better, which means we're reaching more of the people we want to.”

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The results

Within 6 months of switching to Amplemarket, Centaur Labs have recorded:

• -72% decrease in bounce rates
• 6x increase in replies for Duo leads (compared to average across all leads)
• 1.5x increase in opens for Duo leads (compared to average across all leads)
• 1.7x increase in interested responses for Duo leads (compared to average across all leads)
• 4.4x interest on top Duo signal (LinkedIn Competitor Posts)

Since implementing Amplemarket, Centaur have seen a 1.7x jump in interest from leads generated by Duo. Even more impressively, leads sourced via the LinkedIn ‘competitor posts’ signal delivered a 4.4x higher interest rate — all whilst saving Andreas hours on manual outreach.

Andreas’ Duo leads yielded 2x the interest rates of his non-AIleads. He shared with us one of secrets for ensuring his AI-generated outreach is hyper-relevant and impactful for every prospect:

“I spent some time refining my Duo settings and shared all
our case studies with the copilot. Now it creates really sophisticated and relatable messages for any one of our 
target personas where we have a relevant example of customer success.”

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Using AI to automate these types of plays has allowed Andreas to scale his outreach effortlessly and multiply his opportunities.

“I like how Duo surfaces your chosen signals for you and how you can combine your Saved Search personas with LinkedIn activities—we especially use the signals that pull leads interacting with competitor posts, or posts containing specific keywords. It all makes my prospecting easier and faster.”

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As for email, Andreas highlighted something many other sales tools don’t offer:

“One problem area that often gets overlooked is email warm-up and deliverability. That’s why I really appreciate Amplemarket’s Domain Health Center — it’s pretty exceptional. The automated conversations make a huge difference to your mailbox health and reduced our bounces by 72%.”

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Conclusion

In conjunction with internal efforts, Amplemarket’s all-in-one multichannel platform and AI Copilot proved a game-changer for the Centaur team in:

• evolving their prior, less streamlined outbound processes
• safeguarding their deliverability and email reach
• identifying more high-intent leads in less time
• multiplying their outbound opportunity generation

...helping them become a more competitive player in their market in less than 6 months.

As Andreas explains, AI offers you an unbeatable edge:

“We use AI every day. And it’s just the nature of being in a sales role in 2025: everybody should be using AI in some capacity. What we look for in a platform like Amplemarket is anything that can streamline our role.”

And as for the future? Andreas already has his eye on more Duo features that will help him become more productive:

“I've been looking at Duo Inbox for a while and can’t wait for that to go live. That’s another thing that will really streamline my work: I can review a message, tweak it, and then send it instead of having to start from zero!”

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Learn more about Centaur Labs’ medical data labeling AI here and follow them on LinkedIn.

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Your competitors won’t wait — why should you?
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