How Siri Suggestions work on Mac
When you turn on Siri Suggestions, you get suggested actions in some apps even before you ask. For example, when you get an invitation in Mail or book a flight in Safari, you’re asked if you want to add it to your calendar. Or, when you browse webpages, you get suggestions for related webpages.
How Siri Suggestions work
Here are some ways you can get things done more easily when Siri Suggestions are on:
Create email and events: As you add names to an email or calendar event, you get suggestions based on people you included in previous emails or events.
Create a reminder: When someone asks you to do something (for example, “Can you get milk tomorrow?”) and you provide an answer (such as “Yes,”), you can have a reminder created for that item.
Receive FaceTime calls: If you receive an incoming FaceTime call, and the phone number can be found in your contacts or emails, the caller is identified by name. Otherwise, the caller is identified as unknown.
Leave for an event: If your calendar event includes a location, you receive a notification about when to leave based on traffic conditions.
Search in Safari: Suggested websites and other information appear in the search field as you type.
Confirm an appointment or book a flight on a travel website: You’re asked if you want to add the event or other travel information to your calendar.
Read News stories: You can get suggestions based on stories you read and channels and topics you follow.
Customize Siri Suggestions
On your Mac, choose Apple menu
.Click Siri Suggestions & Privacy.
Select apps in the list to turn Siri Suggestions or “Learn from this App” on or off.
Your personal information—which is encrypted and remains private—stays up to date across all your Apple devices where you’re signed in with the same Apple ID. As you use Siri on one device, your experience with Siri is improved on your other devices. When you use Siri, your information is protected, and you can choose what you want to share.
If you don’t want Siri personalization to update across your devices, you can disable Siri in iCloud preferences. On your Mac, choose Apple menu 
, select iCloud in the sidebar, then turn off Siri. Going forward, Siri improvements are restricted to your Mac.