Callers booked straight onto your Outlook calendar
Connect Outlook 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.
OutlookNative 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 Outlook calendar, 24 hours a day.
Booked while they're on the lineThe meeting is created on the Outlook calendar you picked, at the length you set, 30 minutes by default. Nobody types it in afterwards.
Outlook
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 Outlook
Allo reads what it needs to find a good slot, and writes exactly one thing back: the meeting.
OutlookCalendarsOnly the ones you can editOne-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 Outlook 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 into Outlook 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 Outlook calendar, with nothing retyped
- Bookings taken after hours and at the weekend
Allo is an AI phone system, not just an integration
The Outlook 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 featureOutlook integration FAQ
In Allo, go to Settings, then Integrations, then Outlook, and click Connect Outlook Calendar. Sign in on Microsoft's page and grant Allo access to your Outlook calendar. You're sent back to Allo, which reads your calendars, and your account appears in the connected list.
The one you choose. Allo only offers calendars you can edit in Outlook, 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. There are no event types to configure.
Yes. Any team member can connect their own Outlook 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 edit in Outlook. Check your sharing permissions for that calendar, or connect the account that owns it.
Only the person who connected it can disconnect it in Allo. They can also revoke Allo's access directly from their Microsoft account.
Yes. The Outlook 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.