offers the option to print the Invoice or to send it by email to your guest.

To send your invoices in PDF, access the Reservation's Page, click the button on the right side of your invoice's title, click [Invoice] with the envelope icon, verify the message's content that will be sent to the guest; and click [Confirm and Send]:

Creating invoice's email
Confirming message to send
It is very important to remember that the PDF file cannot be edited before sending it, so to use this kind of communication, be sure that your Invoices are with a properly aligned template to your business. 
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