Technically that would fall under action-based email aka Transaction email. Postmarkapp has good explanation [1] It means user triggered some action, like rece

Technically that would fall under action-based email aka Transaction email. Postmarkapp has good explanation [1] It means user triggered some action, like recently signed up or message you so you receive notification of new message awaiting you. This would be different than email marketing - when social network decides one day they want to inform you about the newest features. You didn't ask for that email and it wasn't specific to your actions but rather bulk message send en-masse. [1] https://postmarkapp.com/transactional-email https://postmarkapp.com/transactional-email