About TestParty

TestParty is a digital accessibility startup helping organizations make their websites and mobile apps accessible to all users. Using AI, TestParty integrates directly into engineering workflows to detect and fix accessibility issues before they impact compliance or user experience. Inspired by the engineering world’s “testing parties”, TestParty embodies that same spirit: collaborative, engaging, and results-driven.

TestParty's Challenge

Before working with SendtoWin, TestParty’s team handled cold outreach internally using basic tools.

• They were sending tens of thousands of emails per month with low deliverability.

• The team struggled to maintain a consistent flow of qualified leads.

• They needed a structured, data-backed system to scale outbound efficiently and uncover which market segments to prioritize.

SendtoWin's Solution

TestParty turned to SendtoWin to transform its outbound through signal-based targeting, AI enrichment, and agile iteration.

• Built a scalable outbound system, improving deliverability and ensuring campaigns landed in inboxes.

• Introduced AI-driven personalization: leveraging signals such as accessibility lawsuits, website updates, and conference data to reach the right buyers at the right time.

• Ran rapid-fire experiments: testing multiple market segments (healthcare, finance, insurance, and government) to identify where demand was strongest.

The Results

SendtoWin helped TestParty turn outbound into a growth engine that fuels its overall GTM strategy.

• 73+ new opportunities generated since launch.

• Closed major brands: including TUSHY, one of the largest U.S. bidet companies, in under a month from cold email to close.

• Validated key segments: identifying which industries deliver the highest ROI and focus for future campaigns.

• Transformed outbound into a strategy hub: insights from SendtoWin now inform TestParty’s website messaging, ads, and event playbook.

• Operational efficiency: seamless workflow integration through shared inboxes and weekly strategy loops.

Conclusion

For TestParty, SendtoWin became more than a lead-gen partner, it became a long-term strategic ally driving both growth and learning.

By leveraging AI, data, and continuous experimentation, SendtoWin helped TestParty refine its ICP, optimize messaging, and create a scalable, signal-based outbound system that continues to deliver results.

We’ve been partners for a while now – and we’ll be partners for a long time coming forward. SendtoWin helps us win smarter.”

— Michael Bervell, CEO of TestParty