Passionfroot is a platform that helps content creators, particularly those with business and professional audiences, manage brand partnerships and sponsorships end to end. A creator sets up a storefront listing their newsletter, podcast, YouTube channel, or social placements with pricing and availability, and brands can browse, book, and pay for sponsorships directly, replacing the back-and-forth of email negotiation, manual invoicing, and spreadsheet tracking. The platform handles booking calendars, briefs, deliverable tracking, contracts, and payments, and gives both sides a clear record of what was agreed and delivered. Passionfroot has built a marketplace connecting its creators with brands looking for sponsorship inventory, and it has added an AI agent that helps brands build a sponsorship strategy and shortlist creators that match their target customer based on audience, content style, and past performance. Founded in Berlin in 2021, it counts business-focused newsletter and media operators among its creators and software companies such as HubSpot, Notion, and Intercom among its brand customers. Passionfroot is free for creators to use and takes a percentage fee that is lower on deals a creator brings themselves and higher on partnerships sourced through its network, aligning its revenue with deals actually closed on the platform.