Posse.io

Posse.io is an influencer audience testing platform. In practice that means planning, buying and reporting on paid ads across channels.

Who is it for? Mostly performance marketers and agencies. Alongside the main category they mention Advertising and Digital Marketing. As a small product team themselves (11 to 50 people), they tend to serve customers of a similar scale best. Small vendors mean quick answers and real influence on the roadmap, but check who covers support when someone is out.

Posse.io is based in San Diego, California. Their site is posse.io.

Before you commit, look at platform coverage, attribution model, and fees as a share of spend. Get the renewal terms in writing before the first invoice.

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