Why I'm building OneSlate Calendly is great if you're a freelancer with one calendar. It breaks if you're an executive with shared calendars from your team — which is exactly my situation. I run a small company and have shared calendars from ~10 colleagues. When I create a Calendly link, every "shared" event gets treated as my own busy time. The result: my Calendly booking page often shows zero available slots. People who try to schedule with me give up. I've had to manually email back-and-forth more times than I can count. OneSlate solves this with a simple but specific filter: only calendars where calendar_kind is primary or owned count toward your busy time. Shared calendars are visible to you in the dashboard, but they don't pollute your booking page's availability. That single insight is the core differentiator. Everything else in OneSlate — multi-account integration (Google + Microsoft), mobile-first UX, scheduling links — is built on top of solving that specific executive problem.…