You're a marketer looking to track product newsletter sing-ups on your website. What type of conversion action should you use?

A newsletter signup is a classic example of a lead. The user provides contact information (like an email address) with the expectation of receiving future communications, indicating interest in your product or service. This action moves them further down the marketing funnel without an immediate transaction. Pageviews are too broad; they track any page load, not a specific user action indicating interest. App installs are irrelevant for a website-based newsletter signup. Purchases represent a completed transaction, which is a much later stage than simply signing up for a newsletter.