For example, you have a newsletter with three products. You could define that everyone who click on product "A", receives an hour later an email with a link to get 10% off, if he buys it the same day.
Or, send an instant email with the date and the IP of the client during a login in a backoffice, for example, for security and information reasons. The uses are unlimited and give free rein to your imagination and your own needs.
In the Mailing and automatic email section of Mailpro, you will be able to define the link that will act as a trigger to send the email. You can also add a timed function to trigger the email . Also send automatic welcome emails or automatic birthday emails.