Email clients (Gmail, Outlook, Yahoo Mail) Startups

Boomerang is a 14-year-old freemium email productivity platform that pioneered the inbox snooze button feature now used across Gmail, Outlook, and Slack. The company has bootstrapped to $8M ARR with just 19 employees, achieving profitability within 18 months of launch and maintaining it ever since. In 2024, Mo and the team executed 44 experiments generating $500K in incremental ARR, demonstrating a lean, data-driven approach to optimization.