Sometimes it is necessary to send important notifications to recipients. These are known as transactional emails.
A transactional email is any email sent to an individual that contains information the recipient requires. This can include: password reset emails, subscription confirmation, order confirmation, and delivery notifications.
Unlike marketing emails, transactional emails do not obey email opt-out information.
WarningTransactional emails ignore opt out settings and should be used with caution.
In DailyStory, a transactional email is created the same as any other email. The difference is that in the advanced settings of the email, the email is marked as transactional:

When sent there are some unique characteristics transactional emails have:
The DailyStory API support special uses for transactional email personalization. Using the Send Email API you can include transactional profile fields.
To send transactional profile fields simply include key/value pairs of JSON data in the body of the POST request to the Send Email API.
For example (from Postman):

This sends a confirmation_id and an event_date. Then in the DailyStory email:
Hi,
We've got your registered for {{profile.event_date}}.
Your confirmation code is: {{profile.confirmation_id}}
Thanks from the ACME events team!
And when the email is sent:
Hi,
We've got your registered for May 5, 2023.
Your confirmation code is: 38474673
Thanks from the ACME events team!
See the tutorial that walks through creating and sending a transactional email.