I will delete any application that doesn't specifically cover what I am looking for.
What I need done is an API that will automatically opt-in new customers (once a sale has been made) to my customers campaign at GetResponse.
I have no idea how difficult or easy this task is nor what it should cost.
Clearly, you will need to have done this EXACT thing before, please do not even apply unless you have.
Please give me an estimate of the time it will take you and your bid for this job.
Since I have no idea what it should cost, I am putting in a small budget for the job.