Billions of Gmail users must check important setting now to prevent annoying problem

GOOGLE is warning users about annoying calendar spam from unknown sources.

The tech giant introduced a special new feature designed to stop randomers from swamping your Google Calendar last year.

ReutersStop calendar spammers from flooding your diary[/caption]

Before, anyone could send you an invite and it would appear in your Calendar awaiting approval.

Since July, Google made it possible to only allow those you know to show up in your calendar.

Google has started reminding Gmail users about the feature.

“If you’ve never interacted with someone, their invitations won’t be automatically added to your calendar unless you indicate you do know them,” the email says.

Of course, you can still respond to an invitation in your email.

Known senders are those in your contacts, who work at the same company as you, or someone you’ve interacted with before.

To stop any Tom, Dick or Harry from sending you calendar invites, you can change it within the settings.

Just go to the Google Calendar settings page.

Under General, select Event Settings.

Look for Add invitations to my calendar.

There are three options in the drop down box you can select.

To stop anyone, choose Only if the sender is known.

You can go a step further with When I respond to the invitation in email.

Or, you can leave it open with From everyone.

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