Why is my event automatically shown in the calendar?

Some email clients such as Google Gmail and Microsoft Outlook offer automatic calendar recognition for event emails, reservations, and other confirmations.

This means that the email client automatically scans the content of the email and suggests adding the information directly to the user’s calendar.

This functionality is not controlled or developed by Ticketbutler, but is instead a standard feature available in several modern email and calendar platforms.

Examples of automatic calendar recognition

Email clients may automatically recognize:

Event tickets
Flight reservations
Hotel bookings
Restaurant reservations
Calendar invitations (.ics files)

Google describes the functionality in their official documentation as:
“Emails about events like flights or restaurant reservations are added to Google Calendar automatically.”

Google Calendar – Manage your events from Gmail

Microsoft similarly describes the Outlook functionality as:
“Outlook automatically retrieves important events from your email and adds the items to your calendar.”

Microsoft Outlook – Automatically add events from your email to your calendar

Why does the event appear with an incorrect duration in the calendar?

Calendar integrations depend on which information is included in the event data or invitation.

If an event only contains a start time and no end time, some calendar clients will automatically assign a default duration. This is done so the event can be displayed as a complete calendar block.

The default duration may vary depending on the specific email or calendar platform.

How can I avoid this?

To ensure the correct display in guests’ calendars, we recommend always including both:

Start time
End time

When both timestamps are included in the event metadata or calendar invitation (.ics), calendar clients will typically be able to display the full and correct event duration automatically.