This article outlines how each of the three messaging workflows (SMTP Relay, Trigger API, Launch API) work. Those workflows can be used for use case which cannot be reproduced directly in Campaigns / Scenario.
|SMTP Relay||Trigger API||Launch API|
|Uses contacts from Splio platform|
|Uses designs from Splio platform|
|Excludes contacts from Splio platform blacklists||Only hard bounce and custom blacklists when used contact by contact. All blacklists when used with batches.|