Two Ways to Connect a Calendar
Commitments coming in, and your Zyntro calendar going out. Two separate one-way connections.
What It Is
There are two quite different things people mean by connecting a calendar, and Zyntro supports both.
Bringing your calendar in. You give Zyntro the address of your existing Google or Outlook calendar, and Zyntro reads it. Everything in it becomes busy time here, so your availability stops offering slots you cannot honour. Nothing travels the other way.
Showing your Zyntro calendar out. You create a private subscription link for a Zyntro calendar and add it to Google or Outlook. They mirror it alongside your own calendars, read-only. Nothing travels back.
A third option exists for phones and desktop calendar apps, and it is the only genuinely two-way one — covered in its own section on device sync.
Why It Matters
Because people connect one and expect both. The most common disappointment here is connecting Google so Zyntro knows when you are busy, then wondering why your Zyntro bookings have not appeared in Google. They are opposite connections; you need the second one too.
Because the inbound one protects your time. A booking page is only as honest as what Zyntro can see. If half your week lives in a calendar Zyntro does not read, the page will cheerfully offer those hours — and on a group calendar it will allocate meetings to people who cannot take them.
Because the outbound one is read-only, deliberately. The mirrored copy in Google or Outlook is a view, not a workspace. Editing a mirrored event there does not change anything in Zyntro. If you want to change a meeting, change it in Zyntro, or use device sync instead.
How It Works
Inbound. Your calendar provider publishes a secret address for your calendar in a format calendars understand. You paste that into Zyntro, name it, and choose how often it is re-read — hourly, every four hours, every twelve, or once a day. Zyntro fetches it on that rhythm and records what it finds as busy time attributed to you.
That means it is near-live, not instant. Something you add in Google appears in Zyntro at the next sync, not the same second.
Outbound. Zyntro creates a private link for a calendar. Google and Outlook both accept such a link and poll it on their own schedule — typically hours, and the first fetch after you add it can take a while. Neither provider lets you force a refresh.
Both are per person. You connect your calendar for yourself, and your colleagues connect theirs. One person's connection does not cover the team.
Examples
You keep your real diary in Google and want Zyntro bookings to respect it
That is the inbound connection. Add your Google calendar's secret address to Zyntro and your existing commitments start blocking time here, so your booking page stops offering them.
You live in Outlook and want to see Zyntro meetings there
That is the outbound connection. Create the subscription link on the Zyntro calendar and add it to Outlook, which will show it as an extra calendar beside your own.
You want both, which is the usual answer
Set up both. They are independent, and together they give you accurate availability in Zyntro and full visibility in the calendar you actually live in.
You want to create and edit Zyntro events from your phone
Neither of these will do it — both are one-way. Device sync is the two-way option, and it is what you want on a phone.
A colleague connected their calendar and you assumed you were covered
You are not. Connections are per person, so every member whose availability matters needs their own.
Important: These two connections do not know about each other. Connecting your Google or Outlook calendar brings your commitments into Zyntro so your availability is accurate — it does not put your Zyntro meetings into Google or Outlook. Subscribing Google or Outlook to a Zyntro link does the opposite and nothing more. Set up whichever directions you need; most people want both.
