I'm working in a marketing context, where emails are regularly sent to our customers inviting them to perform certain activities that will help their business. I'm looking for a suitable word that describes the probability that a given customer will act upon our recommendation; some words that have been proposed are "propensity" or "conversion" but I don't find these to be right.
When we send emails to segment X of our customers inviting them to update their profile picture, the (probability of success? action propensity? conversion rate?) is 43%.