How 5th Line scaled high-touch sales with Duo Copilot to 4.5x replies & 10x signal engagement

5th Line’s AI sales transformation at a glance

• 4.5x more replies with Duo leads
• <2.5% bounce rate across all leads
• 10.1x more replies on top Duo signal

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Background

5th Line is a strategic finance firm that helps growth-stage companies raise non-dilutive capital and optimize their financial operations. Unlike traditional B2B SaaS sales teams, one side of their business is transaction-heavy and highly timing-dependent, meaning they need to reach the right prospects at exactly the right moment.

However, their outbound process was highly manual, spread across multiple tools, and lacked the real-time intent data necessary to engage high-fit buyers at the perfect time.

This is the story of how 5th Line unified their sales stack, improved email deliverability, and transformed its outbound strategy with Amplemarket.

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The challenge: fragmented sales tools & no intent data

Before Amplemarket, 5th Line’s outbound sales motions were relatively rudimentary and took a back seat in the pipeline generation process. As Head of Growth Chandler Minaldi shares with us, around 80% of their pipeline was reliant on referrals and they had yet to land on a winning cold outbound formula.

One of the main problems was that their processes were spread across multiple disconnected tools. More importantly, Chandler tells us, they had nothing to help with the timing of their outreach:

"We were using multiple different tools — HubSpot, a separate warm-up tool — but we had no intent data. That was a huge gap."

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Without real-time insights into which prospects were actively looking for financing solutions, the team had no choice but to cast a wide net. But Chandler knew they couldn’t rely on imprecise, high-volume outbound forever:

"We were trying to get away from the spray and pray approach and move to more intentional, strategic outreach."

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Unsurprisingly, email deliverability was a recurring problem as the team found themselves burning through mailboxes with their haphazard outbound approach. 

This was a major issue that needed serious attention since the smallness of the team meant that ensuring their outreach actually landed in inboxes was critical.

"Deliverability was a huge issue for us. We were just not getting anywhere. Moving everything under Amplemarket — including email warm-up — was a game-changer."

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The solution: AI-powered sales intelligence with Amplemarket

With Amplemarket’s unified AI sales platform, 5th Line replaced multiple tools while at the same time gaining powerful new capabilities.

With Duo Copilot, Amplemarket’s purpose-built AI agent for sales, 5th Line was able to streamline outreach while maintaining control over messaging. They soon found they could rely on the AI to generate personalized sequences tailored to their prospects, which gave their campaigns a stronger and more consistent messaging foundation.

"We use the AI as a framework and then tweak it. Our finance audience needs a stripped-down, no-fluff approach, so we’re refining the messaging and prompts to match."

This approach allowed their team to engage more prospects while ensuring messaging is strategic and high-touch, which was critical for their finance-focused audience.

Another one of the biggest wins for 5th Line was gaining access to real-time intent data that helped them target prospects already showing interest in financial solutions.

"We had no intent signals before Amplemarket. Now we can track buying intent — whether that’s engagement with competitor content or industry trends — so we know exactly who to prioritize."

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One particular highlight, Chandler tells us, was the AI-powered keyword tracking on LinkedIn.

"By some miracle, we found a LinkedIn post that literally said, ‘I’m looking for venture debt.’ It was a perfect-fit prospect. Before Amplemarket, we would have never found that."

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Meanwhile, Amplemarket’s Job Change Alerts and growth signals allowed 5th Line to engage prospects the moment they entered a more strategic financial position.

Gaining this intent data was a huge win in itself, but finding it embedded in an all-in-one engagement platform that supported email and LinkedIn sequencing just made the team’s life even easier.

Perhaps the most immediate improvements came from Amplemarket’s built-in email warm-up and deliverability tools which helped ensure their messages were landing in inboxes instead of spam.

"Deliverability was a huge issue for us last year. We were just not getting anywhere. Moving everything under Amplemarket — including email warm-up — was a game-changer. We went from having 4 mailboxes to 15, which has just made our email so much more secure and sustainable."

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This simple but critical shift allowed them to maintain credibility, increase response rates, and maximize their reach while keeping their team lean and efficient.

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The results: more engagement, higher deliverability, & more strategic prospecting

Since transitioning to Amplemarket’s unified AI platform, 5th Line has recorded:

• 2.1x more opens with Duo leads (compared to non-Duo leads)
• 4.5x more replies with Duo leads (compared to non-Duo leads)
• <2.5% bounce rate across all leads (thanks to multi-mailbox support)
• 10.1x more replies on top Duo signal (top signal: LinkedIn Post Keywords)
• 5x average replies on top sequence (5th Line Capital’s retargeting play)

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Chandler describes how Amplemarket’s AI-powered signals have dramatically improved their ability to engage the right buyers at the right time:

“We’ve always prioritized strategic, high-touch outreach, but Amplemarket has made it infinitely more scalable. Now, we can double down on what’s working and cut out all the wasted effort.”

With an industry-leading bounce rate of less than 2.5%, 5th Line ensures every email sent is an opportunity to start a real conversation.

"With more mailboxes, we could finally expand our outreach capacity in a sustainable way that didn’t burn our domains.

And by automating LinkedIn, company growth, and job tracking signals, 5th Line has managed to increase efficiency whilst building a system that drives consistent, high-quality pipeline.

The bottom line was that Chandler’s team were able to scale their high-touch, human-centered sales approach at a fraction of the effort.

"It’s all about meeting customers where they’re at. With Amplemarket, we can be more intentional and strategic without sacrificing personalization."

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Conclusion: AI that make more of reps’ efforts

For 5th Line, like Amplemarket, AI is not about replacing human connection:

"We’re a service-based business. The more time we can spend on real conversations instead of manual prospecting, the better!"

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Amplemarket allowed 5th Line to consolidate their prospecting and outreach needs in one place for better long-term ROI while helping them become more precise and intentional in their outbound.

Chandler explains, "It feels great to be able to show how impactful our cold outbound can be, and that we can build pipeline beyond our usual referral channels!"

The team’s workflows have become more efficient and streamlined, and their outbound more targeted and intentional. At the same time, their prospects are benefiting from more relevant, personalized outreach that speaks to their current pain points. Ultimately, it’s a win-win, and all works in favor of 5th Line’s commitment to creating high-value relationships with service clients.

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Learn more about 5th Line here and follow them on LinkedIn here.

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If your outbound efforts are stalling on poor deliverability, imprecise prospecting, untimely outreach, or all of the above, Amplemarket’s all-in-one AI solution can help you get everything back on track! Trial today to see how our end-to-end solution will turn your outdated motions into a modern pipeline powerhouse.