Marketing emails are those sent for commercial purposes.
These emails contain promotional content meant to engage the user in some way that benefits the business.
Some examples include campaigns like welcome emails, newsletters, special offers, or announcements.
In the email on the image above, we’re letting users of our SOP Library know that there is something new happening with the product—we send these because we want to increase usage of our SOP Library, which will help reduce cancellations.
Transactional emails are those sent because a user took an action that required us to send additional information.
These emails are usually directly requested by the user in one way or another.
Some examples of transactional emails include receipts, login information, support ticket information, and purchase confirmations.
In the email from the image above, the user has registered for a mini-course and we’re sending the credentials necessary to access the content.
In general, you should read up on regulations related to email marketing for the countries you do business in, and learn when to use transactional or marketing emails, as well as the guidelines you need to follow for each of them.