Transactional email
Transactional emails are the ones your users are waiting for. Preping keeps them on their own sending stream, reserves room for them in your daily limit, and shows every step of their journey to the inbox.
9,000 emails free every month · No card needed
Marketing can use at most 80% of your daily limit, so a big campaign never delays a password reset.
Transactional and marketing mail are sent and measured separately, so one never hurts the other's reputation.
Write {{ first_name }} once, with a fallback, and use the same template from the API or SMTP.
Apple Mail Privacy opens and security-scanner clicks are labelled as machine activity, not counted as people.
Queued, sent, delivered, opened: see exactly what happened, and why if it didn't arrive.
Replies and support mail can reach your server as clean JSON.
Email triggered by something a person did: signing up, resetting a password, buying something. It's expected and personal, unlike a newsletter.
They go out the moment your request arrives, on a stream that marketing sends can't crowd out.
Usually not, because they're needed to use your service. Marketing emails always get one automatically.