Like opendais said. In my case, I will have customers who are new to email marketing. I don't want to write the equivalent of Drip myself (have code to comply

Like opendais said. In my case, I will have customers who are new to email marketing. I don't want to write the equivalent of Drip myself (have code to comply with the CAN-SPAM Act, design campaigns, and so on), so I would have rebranded Drip and integrated it into my product via iframes or links or something. The purpose would be to present my users with a seamless experience and not get them wondering why they're now on someone else's domain. Another possibility of whitelabeling would be to license the code behind Drip. There'd have to be some due-diligence, to see if their code-base is compatible with mine. And then there'd be the question of merging new versions of the Drip codebase into mine as they make changes (assuming the license gives me access to updates). And what happens if Drip decides to change direction in a way incompatible with how I want to use it. In any case, I'm still months away from needing something like it, so the question was exploratory.