1. Work out which problem you have
Spam reaches Apple Calendar in two ways, and Apple gives a different fix for each.
A calendar you are subscribed to
Apple says the events in a subscription calendar are controlled by its provider, and that you can subscribe by tapping a link to a calendar. Open your list of calendars. If one is there that you do not recognise, go to section 2.
Invitations to single events
Apple describes these as invitations you reply to with Accept, Decline or Maybe. If there is no unfamiliar calendar in your list, go to section 3.
If you are unsure, check the list of calendars first.
2. Remove a spam calendar subscription
iPhone
In the Calendar app, tap the Calendars button, then tap the info button next to the calendar. Tap Unsubscribe, then choose Unsubscribe or Unsubscribe and Report Junk. Apple says the second option reports the calendar to Apple as a suspected junk subscription.
iPad
The steps are the same. Apple’s iPad guide puts the button for your calendars at the top left.
Mac
In the Calendar app, Control-click the calendar in the calendar list, then choose Unsubscribe. If the calendar list is not showing on the left, choose View, then Show Calendar List. Apple says you can also report the calendar as junk when you unsubscribe, which helps Calendar better identify junk subscriptions.
Apple’s iPhone article is written for iOS 26 or later, and the wording may differ on other versions. Some calendars cannot be removed. Apple’s example is the US Holidays calendar, which you can hide instead by deselecting the tick next to it in the same list.
3. Report an unwanted invitation as junk
iPhone
In the Calendar app, tap the unwanted event. For an event from an unknown contact, tap Report Junk, then tap Delete and Report Junk. For any other event you want gone, tap Delete Event, then Delete Event again.
Mac
In the Calendar app, click the Notifications button in the toolbar, then click New. For an unwanted invitation from an unknown sender, click Report Junk.
iCloud.com
Go to icloud.com/calendar and sign in to your Apple Account. Open the event you want to report, then select Report Junk. Apple says the event is then deleted automatically from your calendar on all your devices signed in to the same Apple Account. Apple notes that you need to be on a tablet or computer to use Calendar on iCloud.com.
Apple words this differently on each platform. On iPhone, it gives Report Junk for an event from an unknown contact. On Mac, it gives it for an unwanted invitation from an unknown sender. On iCloud.com, it says you can report an invitation that you think is junk or spam.
4. Should you decline instead?
Apple’s pages give Accept, Decline and Maybe as the replies to an invitation, and Report Junk as the separate choice for an unwanted invitation from an unknown sender. They do not say what a sender sees when you decline, so we cannot tell you that declining is safe or unsafe. What Apple does say is that Report Junk on iCloud.com reports the invitation to iCloud and deletes the event. For a sender you do not know, Report Junk is the choice Apple offers, so we suggest using it in place of Decline.
5. Choose how iCloud invitations arrive
Apple documents a setting on iCloud.com for how invitations reach you. You need to be on a tablet or computer to use it.
Open the setting
Go to icloud.com/calendar and sign in. Select the button at the top of the sidebar, choose Settings, then select Account.
Pick one of the two options
Receive via In-app Notifications shows invitations as notifications in Calendar on iCloud.com. Receive via Email sends them to your email address, where you can reply from the email.
Know where it applies
If you use more than one email address with iCloud Calendar, you can choose an option for each. Apple says your choice applies to all devices signed in to the same Apple Account with iCloud for Calendar turned on.
Apple suggests the email option for people whose main calendar is not their iCloud calendar. It does not describe it as a spam filter, and choosing it does not stop invitations being sent. They arrive in your inbox instead.
Related guides
- Your calendar is not advertising space. Stop unfamiliar invitations taking over your schedule, without switching off the meetings you actually need.
Go straight to the source
Official guidance and provider instructions. External links open in a new tab.
- Apple: delete calendars and remove events on your iPhone (opens in a new tab)
- Apple: set up multiple calendars on iPhone (opens in a new tab)
- Apple: set up multiple calendars on iPad (opens in a new tab)
- Apple: subscribe to calendars on Mac (opens in a new tab)
- Apple: reply to invitations in Calendar on Mac (opens in a new tab)
- Apple: receive and reply to a calendar event invitation on iCloud.com (opens in a new tab)
- Apple: recognise and avoid phishing messages and other scams (opens in a new tab)
Reviewed 12 October 2026. Menus and services can change; follow the provider’s current instructions if they differ.