From coconut to coldunfold.
Song and Will met in Bali over an open padel match — different backgrounds, same ambition to build something authentic. Song came from Big 4 consulting in Amsterdam. Will came from running a tattoo studio in London and was in the transition phase to high-ticket deals sales. Different paths, same goal: build something lean, impactful, and genuinely helpful - a business that actually solved a real problem for companies struggling to generate consistent leads. A few weeks and many padel matches later, ColdUnfold was created.We wanted to create a service that did one thing incredibly well:Help business owners generate more warm, qualified leads, without hiring, guessing, or wasting time.
Guansong Zou
Song is a systems thinker and lead generation specialist with a background in technology consultancy and cold email marketing. As the architect behind ColdUnfold’s backend, he builds and scales outbound systems that deliver consistent results. From crafting cold email engines to optimizing inbox health and CRM workflows, Song ensures every campaign runs smoothly, and every lead gets tracked, nurtured, and converted. He’s driven by data, but always keeps the client experience at the center.
William Di Rosa
William is a high-performing closer and creative entrepreneur who blends business strategy with real-world sales execution. From building a successful tattoo studio in London to closing high-ticket offers remotely, he’s mastered the art of connecting with clients and converting with confidence. He’s trained in advanced closing frameworks and brings a calm, consultative presence to every sales conversation. Whether leading outbound teams or refining messaging, William knows how to turn cold leads into loyal clients.
Co-Founder: Guansong Zou
Song is a systems thinker and lead generation specialist with a background in technology consultancy and cold email marketing. As the architect behind ColdUnfold’s backend, he builds and scales outbound systems that deliver consistent results. From crafting cold email engines to optimizing inbox health and CRM workflows, Song ensures every campaign runs smoothly, and every lead gets tracked, nurtured, and converted. He’s driven by data, but always keeps the client experience at the center.
Co-Founder: William Di Rosa
William is a high-performing closer and creative entrepreneur who blends business strategy with real-world sales execution. From building a successful tattoo studio in London to closing high-ticket offers remotely, he’s mastered the art of connecting with clients and converting with confidence. He’s trained in advanced closing frameworks and brings a calm, consultative presence to every sales conversation. Whether leading outbound teams or refining messaging, William knows how to turn cold leads into loyal clients.
Cold emails that work
1
1
2
3
4
5
6
7
8
8
OUTBOUND
5
1
2
3
4
5
6
7
8
1
50K
8
7
6
5
4
3
2
1
0
Ready to start getting 50-100 warm leads or 10–20 booked calls a month?
