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Set Google Calendar invitation option to "Only if the sender is known" is the setting that gets you closest to a goal of blocking spam but accepting invites from people you know.
Overview
Setting your Google Calendar invitation option to "Only if the sender is known" is the setting that gets you closest to the goal of blocking spam but accepting invites from people you know.
The key is what Google considers a "known sender":
- People in your contacts.
- People in your organization.
- People you've previously interacted with (e.g., sent emails to or from).
This setting automatically adds events to your calendar if the sender is known. For all other invitations (from unknown senders), it will send you an invitation email that you must explicitly respond to (yes/no/maybe) to add the event to your calendar.
Change Your Google Calendar Invitation Setting
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Open Google Calendar on your computer.
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In the top right, select the Settings gear icon, then choose Settings.
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On the left panel, under "General," choose Event settings.
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Find the section titled "Add invitations to my calendar."
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From the dropdown menu, select the option: Only if the sender is known.
How This Setting Affects Invitations
| Sender Status |
What happens to the event |
Your action to Add to Calendar |
| Known (in contacts, organization, or prior interaction) |
Automatically added to your calendar |
No action needed. |
| Unknown (not in contacts, organization, or prior interaction) |
Not automatically added to your calendar |
You receive an invitation email and must select Yes to respond and add it to your calendar |