Which metric does not impact your sender reputation?

To understand which metrics affect your sender reputation, you have to look at things from the perspective of an Inbox Provider (like Gmail or Yahoo). Sender Reputation is about Email Health: Inbox providers only care about how people interact with the emails you send to their platform. They use these interactions to decide if you are a "good" sender or a "spammy" one. Form Submit Rate is a Website Metric: This tracks how many people filled out a sign-up form on your website. This action happens entirely outside of the email ecosystem. Gmail has no way of knowing if 1% or 50% of your website visitors filled out a form; therefore, it cannot use that data to score your trustworthiness as an email sender