M365 Timeslot-Finder for Outlook

Find free time slots in Microsoft 365 Outlook and share them as copyable text.

M365 Timeslot-Finder for Outlook Stop scrolling through calendars: this extension automatically finds free time slots for all required attendees in your Microsoft 365 Outlook calendar and delivers a ready-to-copy meeting proposal in seconds. How it works Enter a search period, a meeting duration, and the attendees you need. The extension queries the Microsoft Graph API to find windows where everyone is available and displays them in a clear list. Copy a single slot or all suggestions at once – already formatted for email or chat. Features • Automatic free-slot search across multiple attendees' calendars • Attendee search by name or email address (from your organisation's directory) • Flexible search period and selectable meeting duration (15 min to 8 hours) • One-click copy per slot or copy all at once • Fully customisable output template with named placeholders (e.g. {{date}}, {{starttime}}) • Modern Microsoft Fluent Design UI with dark mode support • Available in English and German Privacy & Security • No calendar data is stored locally • OAuth 2.0 with PKCE – no passwords stored, tokens kept in memory only • Minimal, clearly justified permissions (Calendars.Read, User.ReadBasic.All) • You supply your own Azure AD Client ID – no third-party infrastructure involved Requirements • Microsoft 365 account (work or school) • Your own Azure AD app registration with the required delegated permissions (setup guide in the README) This extension is built for IT-savvy users and teams who want to speed up meeting coordination directly from their browser.