How it works
From connecting your first account to a confirmed booking landing on the right calendar — five steps, and what happens underneath each one.
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Connect every account
Create your account, then connect Google or Microsoft 365 and add every account you actually run — brokerage, personal, team. Add your phone's own calendars from the mobile app.
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Name them and set privacy
Give each calendar a source tag and decide whether it's public (titles visible on your own merged view) or private (busy times only).
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Set your rules
Working hours, meeting types, durations, buffers, minimum notice and daily caps — per meeting type.
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Share one link
Your booking page offers only times that are genuinely free across everything, in the visitor's timezone.
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Approve and go
Approve from the email or the app. The meeting lands on the calendar you chose for that meeting type, with a conferencing link attached.
What keeps it correct
Timezones and DST
Everything is stored in UTC and resolved through IANA timezones at query time, with tests pinned around spring-forward and fall-back. Your booker's 9am is their 9am.
Sync that doesn't go stale
Provider push channels expire. LineMerge tracks every channel's expiry and renews it, and runs a periodic full reconciliation as a backstop.
No echo loops
Events LineMerge writes carry a marker, so they are ignored on the way back in. A booking can't reappear as a busy block that blocks itself.
Race-safe booking
Two people clicking the same slot is settled by the database, not by hoping. One wins, the other gets a clear message.