Outlook for Mac - Release notes for Insider Fast builds. On November 6, 2019, the new Outlook for Mac was announced at Microsoft Ignite. The new Outlook is now available to users in Insider Fast. Current Outlook Add-ins: Translator for Outlook add-in now works properly again. Apr 05, 2018  To install add-ins on desktop versions of Outlook, click the “Store” icon in the “Home” ribbon, then search for and “Add” the add-in as before. Note: Outlook add-ins aren’t currently available for Outlook 365 on Mac. How to Use Office Add-ins After installing the add-ins you want, it can be a little tricky to find and use them.

1. Microsoft Outlook For Mac Add-ins 2016
2. Outlook 2019 Mac Add Ins

Microsoft Outlook For Mac Add-ins 2016

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You can create and run an Outlook add-in the same way in Outlook on Mac as in the other hosts, including Outlook on the web, Windows, iOS, and Android, without customizing the JavaScript for each host. 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.

Outlook 2019 Mac Add Ins

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: Outlook on Mac does not support saving a meeting. 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	Can get the item ID and other properties of a master appointment or appointment instance of a recurring series. Can use mailbox.displayAppointmentForm to display an instance or the master of a recurring series.	Can get the item ID and other properties of the master appointment, but not those of an instance of a recurring series. Can display the master appointment of a recurring series. Without the item ID, cannot display an instance of a recurring 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 host	The format of the version string returned by diagnostics.hostVersion depends on the actual type of host. For example: Outlook on Windows: 15.0.4454.1002 Outlook on the web: 15.0.918.2	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 host: A JSON example of AttachmentDetails.contentType: 'contentType': 'image/x-png'. AttachmentDetails.name does not contain any filename extension. As an example, if the attachment is a message that has the subject 'RE: Summer activity', the JSON object that represents the attachment name would be 'name': 'RE: Summer activity'.	A JSON example of AttachmentDetails.contentType: 'contentType' 'image/png' AttachmentDetails.name always includes a filename extension. Attachments that are mail items have a .eml extension, and appointments have a .ics extension. As an example, if an attachment is an email with the subject 'RE: Summer activity', the JSON object that represents the attachment name would be 'name': 'RE: Summer activity.eml'. NOTE: If a file is programmatically attached (e.g through an add-in) without an extension then the AttachmentDetails.name will not contain the extension as part of filename.
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.