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Outlook Multi-inbox

Outlook Multi-inbox
Organization email · Application credentials

Outlook Multi-inbox provides centralized access to authorized corporate mailboxes. The connection is managed by the organization, and the available tools are read-only.

Preparing Microsoft Entra ID​

An administrator needs an application registered in Azure with approved Microsoft Graph permissions for the mailboxes to be queried. Keep the following values:

  • Tenant ID.
  • Application client ID.
  • Application client secret.

Do not use personal credentials or share the secret outside the protected configuration.

Configuring GESCON​

  1. Open Settings > Integrations and enable Outlook Multi-inbox.
  2. Under Connection, enter the Tenant ID, Client ID, and Client Secret.
  3. Under Parameters, limit the mailboxes, folders, and categories:
    • Allowed mailboxes: if empty, no mailbox allowlist is applied.
    • Allowed folders: required; the default value is inbox.
    • Allowed categories: if empty, messages are not filtered by category.
  4. Under Permissions, assign users or groups.
  5. Save and test with an authorized account.

What it can do​

  • Show the configured mailbox scope.
  • List messages in allowed mailboxes and folders.
  • Read a specific message.

Examples​

Summarize new messages in the sales@company.com mailbox that have the Urgent category.

Find the latest email received in support@company.com about the Acme customer.

Scope

An empty mailbox list may expand access to every mailbox allowed by the Azure application. Define the narrowest possible scope in both Azure and GESCON.

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