1. Jira Side:
    1. Log in as a user with the JIRA System Administrators with global permission.
    2. Navigate to Administration → System → OAuth 2.0
    3. Click on Add new integration
    4. At the Service provider, select Microsoft
    5. Click on Copy at the Redirect URL field
2. In Azure
    1. Login to https://portal.azure.com/
    2. Click on App registrations
    3. Click on New registration
    4. Let's pickup a friendly name so it will be easier to identify
    5. Under the "Supported account types" section, choose "Accounts in any organizational directory (Any Azure AD directory - Multitenant) and personal Microsoft accounts (e.g. Skype, Xbox)"
    6. Under the "Redirect URI" section, let's pickup Web and insert the URL from the step #5 above
    7. Click on Register
    8. Click on API permissions
    9. Click on Add a permission
    10. Click on Microsoft Graph
    11. Select Delegated permissions
    12. Let's select the following permissions:
        1. OpenId permissions: offline_access
        2. IMAP: IMAP.AccessAsUser.All
        3. POP: POP.AccessAsUser.All
    13. Click on Add permissions
    14. Click on Grant admin consent for ...
    15. From the left-hand menu, Click on Certificates & secrets
    16. Click on New client secret
    17. Choose a description and expiration date
    18. Take note of the Value generated (this will be used as the "Client secret" at Jira). This will only be visible one time.
    19. Click on Overview
    20. Take note of the Application (client) ID (this will be used as the "Client ID" at Jira)
    21. Let's go back to Jira and complete the configuration by inserting the following details:
        1. Client ID (from step #25 above)
        2. Client secret (from step #23 above)
        3. Scopes: "https://outlook.office.com/IMAP.AccessAsUser.All", "https://outlook.office.com/POP.AccessAsUser.All" and "offline_access"
    22. Click on Save
    23. Test the connection
    24.  If the connection was successful, please proceed
3. Back in Jira:
    1. Navigate to Administration → System → Incoming Mail
    2. Click on Add mail server
    3. At the Service Provider field, let's pick up Microsoft Exchange Online / Outlook (IMAP)
    4. At the Username field, insert the email address being used by Jira
    5. At the Authentication method field, select the new server created under the OAuth 2.0 menu
    6. Click on Authorize
    7. Click on Test Connection and ensure it’s successful
    8. Click on Save