In Outlook, go to File Manage Add-ins or Manage Apps. When you’re prompted to sign in, type the email address and password you use to sign in to Office programs. On the Manage add-ins page, you can do the following: Select Find more add-ins for Outlook at the Office Store to go to the Office Store. A desktop computer with Outlook 2013 or 2016 for Windows® or 2016 for Mac®, or using Outlook online. Mobile devices do not support the Meet add-in for Outlook. About Google Meet. Google Meet provides simple, secure video meetings from Google so you can collaborate and develop relationships with your team regardless of where they are.
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-->You can create and run an Outlook add-in the same way in Outlook on Mac as in the other clients, including Outlook on the web, Windows, iOS, and Android, without customizing the JavaScript for each client. The same calls from the add-in to the Office JavaScript API generally work the same way, except for the areas described in the following table.
For more information, see Deploy and install Outlook add-ins for testing.

For information about new UI support on Mac, see New Outlook on Mac.
Area | Outlook on the web, Windows, and mobile devices | Outlook on Mac |
---|---|---|
Supported versions of office.js and Office Add-ins manifest schema | All APIs in Office.js and schema v1.1. | All APIs in Office.js and schema v1.1. NOTE: In Outlook on Mac, only build 16.35.308 or later supports saving a meeting. Otherwise, the saveAsync method fails when called from a meeting in compose mode. See Cannot save a meeting as a draft in Outlook for Mac by using Office JS API for a workaround. |
Instances of a recurring appointment series |
|
|
Recipient type of an appointment attendee | Can use EmailAddressDetails.recipientType to identify the recipient type of an attendee. | EmailAddressDetails.recipientType returns undefined for appointment attendees. |
Version string of the client application | The format of the version string returned by diagnostics.hostVersion depends on the actual type of client. For example:
| An example of the version string returned by Diagnostics.hostVersion on Outlook on Mac: 15.0 (140325) |
Custom properties of an item | If the network goes down, an add-in can still access cached custom properties. | Because Outlook on Mac does not cache custom properties, if the network goes down, add-ins would not be able to access them. |
Attachment details | The content type and attachment names in an AttachmentDetails object depend on the type of client:
|
|
String representing the time zone in the dateTimeCreated and dateTimeModified properties | As an example: Thu Mar 13 2014 14:09:11 GMT+0800 (China Standard Time) | As an example: Thu Mar 13 2014 14:09:11 GMT+0800 (CST) |
Time accuracy of dateTimeCreated and dateTimeModified | If an add-in uses the following code, the accuracy is up to a millisecond:JSON.stringify(Office.context.mailbox.item, null, 4); | The accuracy is up to only a second. |
New Outlook on Mac (preview)
Outlook add-ins are now supported in the new Mac UI, up to requirement set 1.7. However, the following requirement sets and features are NOT supported yet.
- API requirement sets 1.8 and 1.9
- Contextual add-ins
- On-send
- Compose window pop-out
- Shared folder support
saveAsync
when composing a meeting
We encourage you to preview the new Outlook on Mac, available from version 16.38.506. To learn more about how to try it out, see Outlook for Mac - Release notes for Insider Fast builds.
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