Office 365; Live 2-Way Calendar Sync With 10to8 With the 10to8 online booking system, you will be able to see your full schedule in one place! Thanks to our live 2-way calendar sync with the most popular calendar apps including Office 365, iCal, Google Calendar, and Outlook, all your appointments from your external calendars will automatically appear in 10to8. What’s more, if your clients book a slot on your 10to8 booking page, the booking will appear in all of your diaries. No more double-bookings or confusion, only an organized schedule managed by our reliable online booking system. After you integrate Office 365 with 10to8, make sure to set up automated SMS & email reminders to cut back on no-shows by up to 90%.