Hi,
You know, I love list building! It's the surest path to online success.
But you have to know how to do it. And certainly don't learn it like I did - the hard way (trial and error, repeated over and over).
Here's a course on Udemy by one of the top instructors there:
It's on sale today and tomorrow, so if you're serious about building your list and getting out of the rut you may be in, go take a look.