Reach out to your network/friends, find someone in your target market that can be an early adopter. If you don't have anyone in your close network you can star

Reach out to your network/friends, find someone in your target market that can be an early adopter. If you don't have anyone in your close network you can start reaching out by email to distant connections you might have or try to connect with someone who writes articles, has a podcast that you are a fan of that would be a good fit. If you approach people the right way it's easy to get connected with 'internet famous' developers. What stack/framework are you using? Get involved in that community right away. Write articles, go to meet ups. Contribute to the framework. Become part of the community. You'll be able to meet potential early adopters and get to know the community where lots of potential future signups could come from. Have your early adopters use it and report back with feedback/suggestions. You can also setup monitoring for when they login, when they get alerts to see how much they are using it, how much value it is providing for them. Good luck with your SaaS.