About Microsoft Outlook's Integration
What kind of authentication does Microsoft Outlook use?
Microsoft Outlook uses OAuth.
Connecting with Microsoft Outlook
When you create a Microsoft Outlook Zap, you'll be asked to log in to your Microsoft Outlook account (unless you are already logged in).
Finally, you will be asked to give Zapier permission to access your account. Follow the prompts and click Accept to continue.
If all steps were successful, your Microsoft Outlook account will now be connected.