How The Cosine closed their biggest retainer ever at $500K+ from a single outbound system.
Matt Schroeder had built a strong agency but pipeline was referral-heavy and unpredictable. We installed an outbound engine targeting exactly the right buyer profile, with copy written in The Cosine's voice. 145 calls booked, one of which closed at $500K+, with expected total value closer to $850K.
Advanced Client built The Cosine an outbound system that closed their largest-ever retainer at $500K-$850K and generated 145 calls.
A great agency hitting a referral-led ceiling.
The Cosine had product-market fit, happy clients, and a strong reputation in their niche. What they didn't have was a way to put themselves in front of the right buyer when that buyer wasn't already in their network. Referrals are great until they run out, and growth was capped at whoever happened to introduce whoever next.
The risk with outbound for an established agency is sounding like everyone else. The Cosine had a specific voice and a specific positioning, and any outbound system that diluted either would have done more harm than good. The brief was: build a system that sounds like Matt wrote it himself.
Tight targeting + voice-accurate copy + multi-channel touchpoints.
- The ICP needed narrowing, not broadening - outbound at scale doesn't mean spray. The highest-value buyer profile for The Cosine was specific, and the TAM was smaller than they'd assumed. Quality of fit had to drive everything.
- Voice mattered more than volume - copy had to read like Matt wrote it himself. Generic agency cold email would have undermined the brand they'd spent years building.
- Single channel wouldn't work - senior buyers needed to see The Cosine in their inbox and on LinkedIn before they'd respond. Multi-touch was the minimum bar.
- Reply quality > reply volume - the goal was a steady run of high-quality conversations with the right people, not a flood of mediocre meetings.
A precision system in The Cosine's voice.
We built the smallest, sharpest engine we could. Tight ICP, narrow account list, Clay enrichment pulling real-time signals, multi-channel sequences in Matt's voice. Then we iterated weekly on reply quality, not volume.
What we built
- ICP refinement - worked directly with Matt to define the highest-value buyer profile and narrow the TAM accordingly. Smaller list, sharper fit.
- Clay-powered enrichment - live signals pulled per prospect (recent activity, role changes, company news, technographic data) and woven into every sequence to make personalisation real, not theatrical
- Multi-channel sequences in The Cosine's voice - cold email plus LinkedIn touchpoints, copy written to read like Matt wrote it. No agency-template language. Senior buyers responded because it sounded like a peer, not a vendor
- Reply handling support - helping convert positive responses into booked discovery calls with the right framing
- Ongoing weekly iteration - reply quality and meeting conversion reviewed weekly. Copy, targeting, and hooks tuned every cycle
"We just closed our biggest retainer ever. Minimum $500K, likely closer to $850K."
145 calls booked and the biggest retainer in the agency's history.
The system put The Cosine in front of 145 high-fit buyers for booked sales conversations. One of those conversations closed at a minimum of $500K with expected total contract value closer to $850K - the largest single retainer The Cosine has ever signed, and a deal that changed the trajectory of the business.
- 145 calls booked with right-fit senior buyers across the target ICP
- $500K+ retainer closed - minimum contract value from a single outbound-sourced conversation
- ~$850K expected total value - including planned expansion within the engagement
- Record deal - the biggest single client The Cosine has ever onboarded
- Voice preserved - the outbound layer compounds on brand rather than dilutes it. Buyers respond because it sounds like Matt, not a vendor
- Continued pipeline - the system keeps generating qualified conversations with high-fit buyers, week over week
What the engagement looked like
ICP & targeting
Refined ICP around enterprise and mid-market buyers matching The Cosine's ideal profile. TAM narrowed, not broadened.
Sequences built
Multi-channel sequences written in Matt's voice. Clay enrichment configured. Infrastructure live and ready to launch.
Replies & meetings
Strong positive reply rates from senior buyers. Calls booking consistently with high-quality prospects. Weekly iteration on hooks and targeting.
$500K+ closed
Biggest retainer in company history closed from a single outbound-sourced conversation. Minimum $500K, expected closer to $850K.
Frequently asked questions
What results did Advanced Client achieve for The Cosine?
Advanced Client's outbound system helped The Cosine close their largest-ever retainer worth $500K-$850K, generate 145 calls, and consistently book 4-10 meetings per week.
How many meetings per week can a B2B outbound system generate?
The Cosine's outbound system built by Advanced Client delivers 4-10 meetings per week on a consistent basis, alongside 145 total calls from the campaign.
What outbound agency works with procurement technology companies?
Advanced Client built an outbound system for The Cosine, a procurement intelligence platform, which resulted in their largest-ever retainer at $500K-$850K.
What tools did Advanced Client use for The Cosine's outbound?
The stack included Clay, Instantly, and Attio, configured to deliver a steady flow of 4-10 meetings per week for their procurement intelligence platform.
Can cold outbound close six-figure contracts?
Yes. The Cosine closed a $500K-$850K retainer, their largest ever, directly from the outbound system Advanced Client built using Clay, Instantly, and Attio.
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