Hi, Wolfram 

Thanks for reaching out to us

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At this time we don't have any native integration to synchronize Amelia with CalDav.

But you can suggest this as a future improvement, if you wish.

Please feel free to search through our feature suggestion page, 

 to see if someone may be already suggested this feature. If you can't see it, feel free to add your suggestion there, and as more people vote, the feature will move higher on the priority list.

You can certainly follow our changeLog page if you'd like, where we state any changes/new features/bug fixes during updates;

and our newsletter, so you're informed about new features, bug fixes, freebies, etc.

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At this time, the available Calendar integrations we have are :

Integration with Outlook Calendar;

Integration with Google Calendar.

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But we do have an option to send ics ( iCalendar) file in the notifications via email.

You can enable this in Amelia settings/Notification settings

This option gives you the opportunity to send ics file in the notifications that are sent to the customer 

( it can also be sent to employees, and any additional emails you choose, for example you can add additional contact for a manager or Admin to follow all the bookings),

 so they can download it and use it to add an appointment or an event to any Calendar.

You can also configure the ICS File Description/details,

and you can add automated notification placeholders there.

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Additionally, I just wanted to point out that we have pages with Demos, that you can use to try out the plugin's features - https://wpamelia.com/demos/

and there is a 15-day money-back guarantee period, so if you purchase the plugin, you can safely fully test it out,

we would assist you with our support along the way, and if it doesn't fit your needs you can request and receive a refund in that period.

Let us know if you have any additional questions