There isn’t a fixed number of emails you must collect before starting your campaign. What matters more is the quality of the contacts you’ve gathered. Even if you only have a small list, say around 50 to 100 people, you can still launch if they’re the right audience. It’s better to have fewer interested people than a large group with no real interest in your offer. Starting early also helps you test your email content and see how people respond. From there, you can improve your subject lines, offers, or timing. As your list grows, you can learn what works best and get better results. Instead of waiting for a big number, it may be more helpful to start and learn from what happens. Have you tried starting with a smaller list before building it up?