Email transmission errors

From time to time an email that you attempt to send cannot be delivered to the recipient. On these occasions, on the Tour/Departure where you attempted to send the email, the email tick will show red, or purple, to indicate that there has been a delivery issue.

And on the Tour/Departure dashboard, in the top left corner, there is a button to display all the email transmission errors.

There can be a multitude of reasons why emails can't be delivered. A recipient's email server might be down, the email could have been blocked by the recipients SPAM filters, or many other reasons. This page explains just some of these reasons: https://support.myodyssey.app/article/689-why-are-our-odyssey-emails-being-blocked