How Warp increased cold call pickup rates from 8% to 13% with Cleanlist AI

As told byHayk GhonGTM Lead, Warp

8% to 13%

Pickup Rate62% improvement in connections

Data Accuracy

Across their entire waterfall

Channel

Phone-first outbound motion

Industry: HR Technology & Payroll Automation
Based in: United States
Team: 49 employees

Bad phone numbers held pickup rates at 8%

Warp runs a phone-first outbound motion, and pickup rates are everything. Their existing data providers were returning phone numbers that rang out, hit voicemail, or were simply wrong, dragging pickup rates down to 8%.

The team was already running a data waterfall across multiple providers, but none of them delivered consistently accurate phone data. Every missed connection was a wasted call and lost pipeline.

“When you're dialing 200+ numbers a day, the difference between 8% and 13% pickup is massive. That's dozens of extra conversations every week.”

Hayk Ghon, GTM Lead

Cleanlist AI joined the waterfall they already ran

Warp added Cleanlist AI as a data source in their enrichment waterfall. Cleanlist AI's phone data, sourced and verified across 25+ providers, filled the gaps that their existing tools couldn't cover.

By layering Cleanlist AI into their existing workflow, Warp got the highest accuracy phone numbers without rebuilding their process. The data quality improvement was immediate.

Their waterfall, before and after

BeforePhone data from their providers

+1 (•••) •••-••41Provider 01Rang out
+1 (•••) •••-••07Provider 02Voicemail
+1 (•••) •••-••88Provider 03Wrong number

Pickup rate8%

Series B sales leaders

NamePhone

Marcus Vale+1 (415) 555-0142

Naomi Osei+1 (617) 555-0164

Ines Delacroix+1 (212) 555-0187

Aviva Roth+1 (312) 555-0126

Pickup rate13%

Pickup rates rose from 8% to 13%

Cold call pickup rates jumped from 8% to 13%, a 62% improvement. Reps were connecting with more prospects in every calling session, directly translating to more meetings booked.

Cleanlist AI data became the highest-accuracy source in Warp's entire waterfall. The team now prioritizes Cleanlist AI-verified numbers, knowing they deliver the best connection rates across their stack.

Pickup Rate: 8% → 13%
Data Accuracy: Highest
Channel: Cold Call

“Cleanlist AI gives us the highest accuracy data in our entire waterfall. Pickup rates went from 8% to 13% — that's a game changer for a phone-first team.”

Hayk Ghon, GTM Lead

10,000+ users, from founders to full sales teams