I am trying to create and add multiple subscribers to a list all at the same time through the Marketing Cloud API.
Currently I am able to add them individually, which works but it takes roughly 10 minutes. We have nearly 1000 subscribers to add to a list, and it would be ideal if we could do this pretty quickly.
I've combed through the documentation and the forum and I'm unable to find anything that could help me.
Can I upload a csv file from php using the Fuel SDK?
Can I add multiple subscribers in one SOAP or REST request?