To add an add-in in New Outlook, you can follow these steps:
In Outlook, go to the navigation bar and select More apps > Add apps>Search Evernote>Add.
Get the add-ins in the reading pane. Select a message in the Reading Pane or open a message in a separate window. From the action bar of the message, select Apps.
Add add-ins when composing a new message. Create a new message or reply to an existing one. From the ribbon, select the Message tab, then choose the add-in you want to use.
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