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

The Challenge

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 dial 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

The Solution

Warp added Cleanlist as a data source in their enrichment waterfall. Cleanlist's phone data — sourced and verified across 15+ providers — filled the gaps that their existing tools couldn't cover.

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

The Results

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

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

“Cleanlist 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