Transactional emails are messages sent automatically in response to defined subscriber actions, such as order confirmation emails sent right after an online purchase. Most companies use transactional emails only to send basic information, but there are ways to get more out of these types of emails, which is a good idea since the open rates hover around 100%. Here are examples of the types of emails sent automatically to subscribers and customers, i.e. the types of emails you can optimize to get better results: