Callers booked straight onto your Google Calendar
Connect Google Calendar and your Allo AI receptionist books the meeting while the caller is still on the line, on the calendar you choose, inside the hours you set.
Google CalendarNative integrationBooks during the callLive in minutesTrusted by 6,000+ businesses
From a ringing phone to a booked meeting
No message to return, no callback to promise. Your AI receptionist answers, finds a slot that's genuinely free and creates the event before the caller hangs up.
The caller asks, the agent answersYour AI receptionist picks up, works out what the caller wants and offers a time that is actually open on your calendar, 24 hours a day.
Booked while they're on the lineThe meeting is created on the Google Calendar you picked, at the length you set, 30 minutes by default. Nobody types it in afterwards.
Google Calendar
Booked
It books inside your rulesBusiness hours, a buffer between meetings, a minimum notice period and your blocked dates are all respected, so the agent never books a slot you can't keep.
Booking rulesWhat Allo reads and writes in Google Calendar
Allo reads what it needs to find a good slot, and writes exactly one thing back: the meeting.
Google CalendarCalendarsOnly the ones you can write toOne-wayEvent duration30 minutes by defaultOne-way
Business hours and time zoneSet per connected accountOne-way
Blocked datesNever booked overOne-wayMeetingsCreated during the callOne-wayEach connected Google account carries its own hours, time zone, blocked dates and booking rules.
Taking the time down by hand vs booking with Allo
Taking the time down by hand
Callers asked to leave a message and wait for a callback- A time promised on the phone, then double-booked
- Somebody typing the appointment in later, or not at all
- Evenings and weekends going straight to voicemail
With Allo
The meeting booked while the caller is still on the line- Only slots that are genuinely free, inside your hours
- The event on your Google Calendar, with nothing retyped
- Bookings taken after hours and at the weekend
Allo is an AI phone system, not just an integration
The Google Calendar sync is one part. Allo is the phone your team calls, texts and gets coached from every day.
AI receptionistAllo answers when you can't, qualifies the caller and books the meeting, 24/7, so no lead slips away.
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Call recording and AI summariesEvery call is recorded, transcribed and summarized, so the key points and next steps are captured without taking notes.
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Run Allo from your AI assistantConnect Allo to Claude, ChatGPT and more through the Allo MCP, and pull call data or trigger actions just by asking.
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Business texting built inText customers from your Allo number and keep calls and messages together in one place.
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Call queue
Power dialerCall through a list back to back with no manual dialing, so your reps spend their time talking, not clicking.
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+12%
Call analyticsSee call volume, outcomes and team activity at a glance, and coach from real conversations.
Explore this featureGoogle Calendar integration FAQ
In Allo, go to Settings, then Integrations, then Google Calendar, and click Connect Google Calendar. Sign in to Google and grant access. Allo reads your calendars and your account appears in the connected list, ready for an agent to book from.
The one you choose. Allo only offers calendars you have write access to in Google, and if you don't pick one it books onto the account's primary calendar. You also set how long each booked meeting is, 30 minutes by default.
Yes. Any team member can connect their own Google account, and any connected account in the workspace can be the one an agent books from, including a teammate's. Changing which calendar it uses and how long the meetings are is restricted to the account's owner, an admin or a manager.
Booking rules. A 30 minute buffer between meetings and a 2 hour minimum notice are on by default, business hours are respected by default, and you can turn on a booking window to cap how far ahead callers can book, 60 days by default. Blocked dates are never booked over.
Allo only shows calendars you can write to. Check your sharing permissions for that calendar in Google, or connect the account that owns it.
Yes. The Google Calendar connection exists so your Allo AI receptionist can book a caller in during the call. It's what turns an after-hours call into an appointment instead of a voicemail.