At this time the customer will receive an email notification asking them for online payment. Let's do this in 
Notifications by adding an email notification sent to the customers for the event 
Reservation color changed. Because there's only a single notification for any color change, we'll need to make sure it's sent only when the color is changed to 
validated. We'll do this by embedding the entire body of the email notification inside the condition 
$(if) $(rental_color_validated) $(then) --- email body --- $(endif) . The tag 
$(payment_form_url_direct) points to the url of the page where the customer will be able to make the online payment. The version of this tag without the 
_direct suffix would show another page on your website with the information about the payment to be made and with the payment button. Another alternative which could be used here is 
$(payment_form_url:AMOUNT) e.g. $(payment_form_url:100) for the payment amount of 100. See these tags in 
Q204.
    

Once the online payment is made, planyo marks the reservation as confirmed (if the payment amount corresponds to the amount specified in resource settings) and sends out the 
reservation confirmed email notification. We should also once again change the color. Set the label of 
pastel green to 
paid:
    

The color manager rule should be triggered by the 
Payment received event. We should also add a requirement for the previous color to be pastel blue / validated so that this color change can only happen if the reservation was previously internally validated.
    


These are all the steps of the reservation process prior to the customer's arrival. Of course you can configure other emails, e.g. a reminder sent X days prior to the arrival, see 
Q211.