A transactional message is an individual and unique communication sent to a user by a provider such as a website.
Adobe Campaign allows you to integrate this functionality with an information system which sends it events that are to be transformed into custom transactional messages.
Transactional messages can be sent by email, SMS or push notification, depending on your options. Please check your license agreement.
The message type is defined when configuring the event that will be transformed into a transactional message. See Transactional messaging configuration.
Adobe Campaign prioritizes processing the transactional messages over any other delivery.
Let's take the example of a company that has a website and on this website its users can buy products.
Adobe Campaign allows you to send a notification email to site users who have added products to their cart: when one of them leaves the site without going through with their purchases, a cart abandonment email is automatically sent to them.
Configure an event that will be named "Cart abandonment" and publishing this event configuration, which automatically creates a transactional message. Creating and publishing an event are presented in the Configuring an event to send an event transactional message section.
Furthermore, in order for the event to be triggered when a client abandons their cart, this event has to be sent from the company's website using the Adobe Campaign Standard REST API. See Site integration.