Yell, a privately owned company headquartered in Japan, operates as a tier 1 media tech buyer. Founded in 2020 and employing approximately 30 individuals, the company functions as a specialized Japanese human resources and organizational development firm. It provides "External Mentoring and Listening" for the corporate sector through its proprietary "YeLL" platform, which connects employees with external "Professional Listeners" to improve psychological safety, employee engagement, and leadership development.
YELL, a payments platform for consumers and small businesses, surpassed 25,000 customers on August 25, 2026, reaching the milestone ahead of internal projections. New-user acquisition drove this growth, increasing 189% month-over-month in April 2026, followed by a further 66% rise in May.
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