Set preferences for Outlook for Mac
Applies to: Outlook for Mac, Outlook LTSC for Mac 2021, Outlook 2019 for Mac
As an IT admin, you may want to provide Mac users in your organization with a standard set of preferences for Outlook in either of the following ways:
- Set a default preference, which users can change.
- Force a particular preference, which users can’t change.
The following preferences can be used to simplify account setup for Microsoft 365 (or Office 365) mailboxes, help protect company data, and support a streamlined user experience.
These keys are CFPreferences-compatible, which means that it can be set by using enterprise management software for Mac, such as Jamf Pro.
The following list shows the preferences that are covered in this article:
- Allow only corporate mailboxes to be added
- Allow S/MIME certificates without a matching email address
- Automatically configure Microsoft 365 mailbox on first launch
- Disable automatic updating of weather location
- Disable "Do Not Forward"
- Disable "Do not send a response"
- Disable "Encrypt-Only"
- Disable export
- Disable import
- Disable Junk settings
- Disable signatures
- Disable Skype for Business online meetings
- Disable S/MIME
- Disable Teams online meetings
- Enable new Outlook
- Hide local folders
- Hide text about adding non-corporate mailboxes
- Set the order in which S/MIME certificates are considered
- Specify calendar first day of week
- Specify default weather location
- Specify Microsoft 365 mailbox to be added on first launch
- Specify when pictures are downloaded for email
Mailbox settings
Automatically configure Microsoft 365 mailbox on first launch
The email address used for Office activation will be added on first launch.
| Category | Details |
|---|---|
| Domain | com.microsoft.office |
| Key | OfficeAutoSignIn |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.17 |
| Comments | This key also suppresses first run dialogs for other Office apps, including Word, Excel, PowerPoint, and OneNote. |
Specify Microsoft 365 mailbox to be added on first launch
Set the domain or full email address of Microsoft 365 mailbox to be added on first launch.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DefaultEmailAddressOrDomain |
| Data Type | String |
| Possible values | Various (example: "contoso.com") |
| Availability | 16.18 |
| Comments | The full email address or domain specified will be added in Outlook instead of the Office activation email address. |
Allow only corporate mailboxes to be added
Specify one or more domains users are allowed to add in Outlook.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | AllowedEmailDomains |
| Data Type | Array of Strings |
| Possible values | Various (example: "contoso.com") |
| Availability | 16.18 |
| Comments | Doesn't remove or disconnect accounts already added in Outlook. |
Hide text about adding non-corporate mailboxes
Hide the “Did you know? Outlook supports…” text in the Set Up Your Email success dialog box.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | HideCanAddOtherAccountTypesTipText |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.18 |
| Comments | Only hides text. Doesn't impact ability to add non-corporate mailboxes. |
Import/export settings
Disable import
Prevent users from being able to import archive files (.olm and .pst) and Outlook for Mac 2011 data.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableImport |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.18 |
| Comments | Key must be set to true and forced. |
Disable export
Prevent users from being able to export archive files (.olm).
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableExport |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.18 |
| Comments | Key must be set to true and forced. |
Meetings settings
Disable "Do not send a response"
Prevent users from selecting “Do not send response” when replying to a meeting request.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableRespondToMeetingWithoutResponse |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.56 |
Disable Skype for Business online meetings
Prevent users from adding Skype for Business online meeting details to events.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableSkypeMeeting |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.19 |
| Comments | Key must be set to true and forced. |
Disable Teams online meetings
Prevent users from adding Teams online meeting details to events.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableTeamsMeeting |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.20 |
| Comments | Key must be set to true and forced. |
Security settings
Disable "Encrypt-Only"
Prevent users from applying the Encrypt-Only option to emails when using Microsoft 365 Message Encryption.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableEncryptOnly |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.40 |
| Comments | Only applies to the new Outlook. |
Disable "Do Not Forward"
Prevent users from applying the Do Not Forward option to emails when using Microsoft 365 Message Encryption.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableDoNotForward |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.40 |
| Comments | Only applies to the new Outlook. |
Allow S/MIME certificates without a matching email address
Allow users to decrypt and encrypt S/MIME messages when the S/MIME certificate does not match the email address.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | AllowCertsWithoutMatchingEmailAddress |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.45 |
| Comments | Only applies to the new Outlook. |
Set the order in which S/MIME certificates are considered
Set the order in which certificates will be used to decrypt and encrypt S/MIME messages.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | SMIMECertificatesLookupOrder |
| Data Type | Array of unsigned integer |
| Possible values | 0 (Contacts), 1 (GAL), 2 (Device), 3 (LDAP) Default is [0, 1, 2, 3] |
| Availability | 16.45 |
| Comments | Only applies to the new Outlook. |
Disable S/MIME
Prevent users from applying S/MIME option to email messages.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableSMIMECompose |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.57 |
| Comments | Only applies to the new Outlook. |
Weather location settings
Specify default weather location
Set default location for weather in calendar view.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DefaultWeatherLocation |
| Data Type | String |
| Possible values | Various (example: “Paris, France”) |
| Availability | 16.18 |
| Comments | Use the format returned by the weather location search within Outlook. |
Disable automatic updating of weather location
Prevent users from choosing Update Location Automatically for weather location.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | Weather_update_automatically |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.19 |
Other settings
Hide local folders
Prevent users from viewing local On My Computer folders in the sidebar.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | HideFoldersOnMyComputerRootInFolderList |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.17 |
| Comments | Found under Outlook > Preferences > General > Sidebar. |
Specify when pictures are downloaded for email
Set when pictures are automatically downloaded from the internet for email.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | AutomaticallyDownloadExternalContent |
| Data Type | Integer |
| Possible values | 0 = Never 1 = In messages from my contacts 2 = In all messages (default) |
| Availability | 16.17 |
| Comments | Found under Outlook > Preferences > Email > Reading > Security. |
Disable signatures
Prevent users from being able to create, edit, and add client-side signatures.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableSignatures |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.18 |
| Comments | Key must be set to true and forced. |
Specify calendar first day of week
Set the first day of week in calendar view.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | CalendarFirstDayOfWeek |
| Data Type | Integer |
| Possible values | 1 = Sunday (default) 2 = Monday 3 = Tuesday 4 = Wednesday 5 = Thursday 6 = Friday 7 = Saturday |
| Availability | 16.19 |
Enable new Outlook
Set the availability and default position of the New Outlook switch.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | EnableNewOutlook |
| Data Type | Integer |
| Possible values | 0 = Switch hidden 1 = Switch displayed, default off 2 = Switch displayed, default on (default) 3 = New Outlook enabled with switch hidden |
| Availability | 16.38 |
Disable Junk settings
Prevent users from applying Junk options to emails.
| Category | Details |
|---|---|
| Domain | com.microsoft.Outlook |
| Key | DisableJunkOptionsPrefKey |
| Data Type | Boolean |
| Possible values | false (default) true |
| Availability | 16.55 |
| Comments | Only applies to the new Outlook. |
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