Companies that use InboxKit

Source: Analysis of Linkedin bios of 3,959 companies that use InboxKit

I noticed InboxKit users fall into three distinct clusters. The first is B2B software and AI companies building tools for sales, marketing, and operations. These include companies like Parsley (AI presales agent), IrisAgent (AI customer support), and trumpet (Digital Sales Rooms). The second cluster is service providers: agencies, consultancies, and outsourced teams spanning marketing, recruiting, business consulting, and specialized advisory work. The third is a long tail of property management companies, vacation rentals, and niche B2B services.

These are predominantly small to mid-sized companies. The employee counts cluster heavily in the 2-50 range, with a few larger outliers. Funding data, when present, suggests seed to Series B stage companies, though many appear bootstrapped or don't disclose funding. The bios read like companies in active growth mode who need to communicate credibility and differentiation quickly. They're past the "we're building something" phase and firmly in "we deliver measurable results" territory.