--- title: Delegated calendar slug: emailplus/guide/ios/delegated-calendar createdAt: 2026-09-07T11:21:47.684Z --- Ivanti Email+ supports delegated access for Calendar. The delegated calendar option enables the calendar owner to assign their calendar to a delegated user within the organization's exchange Global Address List (GAL). To enable the **Add Delegated Mailbox** option in Email+, configure the **calendar\_delegation** value in **enabled\_features** key value pair. Microsoft Exchange server provides Reviewer, Editor, and Author level permissions, in the Email+ app delegated user can create, view edit and remove calendar events according to permissions given by the owner. The delegated user can view event related updates on the Email+ app with this permission. The following table displays the different delegation permissions and the actions they can perform: | Permission level | Action allowed | | ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Reviewer | With the Reviewer level permissions you can perform the following actions:
- Appointments (event without attendees) - no options
- Delegated calendar owner's created invite - no options
- Received invite – Reply / Reply All / Forward on behalf of | | Author | With the Author level permissions, you can perform the following actions:
- Appointments (event without attendees) - no options
- Delegated calendar owner's created invite - no options
- Received invite – Reply / Reply All / Forward on behalf of
- Author created appointments – no Reply / Reply All / Forward options. Edit button is displayed
- Author created invites – no Reply /Reply All / Forward options. Edit button is displayed | | Editor | With the Editor level permissions, you can perform the following actions:
- Appointments (event without attendees) - no Reply / Reply All / Forward options. Edit button is displayed
- Delegated calendar owner's created invite – no Reply / Reply All / Forward options. Edit button is displayed
- Received invite – Reply / Reply All / Forward on behalf of
- Editor created appointments - no Reply / Reply All / Forward options. Edit button is displayed
- Editor created invite - no Reply /Reply All / Forward options. Edit button is displayed | To configure delegation, configure the following key-value pairs: - Add **calendar\_delegation** value to **enabled\_features** key-value pair to add the **Add Delegated Mailbox** option in the Email+ app. - Add **email\_ews\_host** key-value pair with EWS host value as FQDN to provide access to EWS server. - Add **ews\_min\_allowed\_auth\_mode** key value pair to enable basic, certificate based authentication, and modern\_auth authentication methods to the exchange server through EWS protocol. If Email+ is configured with **eas\_min\_allowed\_mode** KVP as Modern Auth, add **ews\_min\_allowed\_auth\_mode** KVP with **modern\_auth** value to enable modern authentication method to the EWS server. - If EWS server is not accessible publicly (located in private network), then VPN should be configured. When a calendar is delegated, a system generated mail is sent to the delegated user with details of the calendar owner. The calendar owner has the ability to assign or deny access to the delegated calendar. ### Adding delegated calendar In the Email+ app, go to **Settings > Accounts > Add** option and enter the calendar owner's email address. Select the calendar owner to add the delegated calendar. You can assign a color to the delegated calendar to differentiate between assigned calendars. :::hint{type="info"} The calendar owner delegates the calendar from the Microsoft Outlook on the web (OWA). For more information on delegation, see [Microsoft documentation](https://support.microsoft.com/en-us/office/allow-someone-else-to-manage-your-mail-and-calendar-41c40c04-3bd1-4d22-963a-28eafec25926). ::: The user can manually remove the delegated calendar from the Email+ app. If the access to the deleted calendar is available, then user can again add that delegated calendar. When the calendar owner removes access to the delegated calendar, Email+ receives "**Delegated Calendar access has been denied**" notification when the Email+ app is launched. ### Disabling delegated calendar feature The admin can disable the **Add Delegated Mailbox** option from the Email+ app by removing **calendar\_delegation** value from the **enabled\_features** key value pair. ## Ivanti Email+ configurations supported for Delegated Calendar The following table lists the supported Email+ and EWS configurations. :::hint{type="info"} If EWS server is not accessible publicly (located in private network), then VPN should be configured. ::: | Email+ Configuations | Additional Configurations for EWS | Supported | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- | | Ivanti EPMM and Ivanti Neurons for MDM with sentry, Modern auth with or without **email\_password** KVP, Microsoft Office 365 | Add **email\_ews\_host** KVP with EWS server value
Add **ews\_min\_allowed\_auth\_mode = modern\_auth** KVP | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, without sentry, Modern auth with or without **email\_password** KVP, Microsoft Office 365 | Add **ews\_min\_allowed\_auth\_mode = modern\_auth** KVP | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, with sentry, Modern auth with or without **email\_password** KVP, Microsoft Office 365 | **Exchange host for EWS** should have value of the EWS server
Add **ews\_min\_allowed\_auth\_mode = modern\_auth** KVP | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, with sentry + Local certificate, Basic auth with or without **email\_password** KVP, Microsoft Exchange versions 2016 and 2019, Microsoft Office 365 | Add **email\_ews\_host** with EWS server value | Yes | | Ivanti EPMM, with sentry + group certificate, Basic auth with or without **email\_password** KVP, Microsoft Exchange versions 2016 and 2019, Microsoft Office 365 | Add **email\_ews\_host** with EWS server value | Yes | | Ivanti EPMM, with Sentry + MS scep certificate, Basic auth with or without **email\_password** KVP, Microsoft Exchange versions 2016 and 2019, Microsoft Office 365 | Add **email\_ews\_host** with EWS server value | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, with Sentry, Kerberos with **prompt\_email\_password=true** and enter password on Email+ login screen, Microsoft Exchange versions 2016 and 2019 | Add **email\_ews\_host** with EWS server value | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, with Sentry, Kerberos with **email\_password** KVP with hard coded value (which is not probably a use case), Microsoft Exchange versions 2016 and 2019 | Add **email\_ews\_host** with EWS server value. | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, without sentry, Basic auth (with or without 'email\_password' KVP), Microsoft Exchange versions 2016 and 2019, Microsoft Office 365 | Add **email\_ews\_host** with EWS server value. | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, with or without sentry, Certificate based auth, Microsoft Exchange versions 2016 and 2019 | Add **email\_ews\_host** with EWS server value
Add **ews\_min\_allowed\_auth\_mode = cert\_base** KVP .
For **cert\_base** KVP, Microsoft Office 365 is not supported. | Yes | | Ivanti EPMM or Ivanti Neurons for MDM, with sentry, Kerberos (without 'email\_password' KVP), Microsoft Exchange versions 2016 and 2019 | | No | :::hint{type="info"} Email+ does not show alerts and notifications for delegated events. :::