How do you get people to come back to your SaaS?

Getting someone to sign up feels like a win

But what happens when they use your product once and never return?

I think this is one of the hardest parts of building a SaaS

People might like your idea but unless your product becomes useful in their daily work they may not have a reason to come back

Features can bring attention but solving a real problem gives people a reason to stay

For SaaS founders and makers what has helped you turn new signups into active users?