1SaaS free signup
Someone just created a free account in your product.
Subject
You're in - here's the 2-minute first win
Body
Hi [First name], Welcome to [Product] - your account is live. If you do one thing today, do this: [the single activation action, stated as an imperative with a time estimate, e.g. "connect your inbox - it takes about two minutes"]. That is the moment [Product] starts [the core payoff] for you. [Button/link: the one action] I'm [Your name], [role]. Reply to this email with anything - it lands in my actual inbox, and I answer. [Your name]