The setup
Owner Vera fans train@ out to six coaches. Each manages their own timetable from their own inbox.
How the mail flows
- A member cancels the 6am spin class at 5:10am.
- The coach holds the identical cancellation within minutes, still at home.
- The slot goes to the waitlist instead of running empty.
- train@ keeps the attendance-affecting record for billing disputes.
Why Sinka fits here
- Early and late classes cover themselves — no office relay.
- Coaches reply as themselves, so members learn names.
- Cover coaches get copies for their week, revoked after.
Watch out for
- Waitlist order must live in one place or the slot goes to the loudest, not the first.
- Payment disputes need the thread — keep train@ CC'd on anything money-related.
Last updated: 29 October 2026 · Browse all use cases
Try this setup yourself. Sinka is free and open source — one inbox in, every teammate covered.
Get Sinka on GitHub
Get Sinka on GitHub