Sendible

Sendible is the social media management platform Gavin Hammar bootstrapped from London in 2009, deliberately targeting digital marketing agencies that manage social accounts for multiple clients simultaneously — a niche Hootsuite and Buffer largely ignored. The agency workflow is fundamentally different from a brand managing its own social: you need separate client workspaces, approval workflows where clients can approve posts before they go live, and white-label reports that look like they came from your agency. Sendible grew to $8M+ ARR by integrating more networks earlier than competitors — including YouTube, Google Business Profile, and LinkedIn company pages — and by building features that make the agency's client relationship smoother. Content suggestions, RSS feed auto-posting, and a client-facing dashboard where customers can view and approve their content calendar became core differentiators. The product was acquired by Diginius in 2022, but its bootstrapped story from a UK-based single founder to an eight-figure business remains a case study in niche-focused SaaS growth.