Will You Pay for a SaaS which Helps you Build Email List on AutoPilot?

Hello Fellow Founders. Will You Pay for a SaaS which helps you build an Email List on Autopilot? So the idea is to create a platform which enables you to create content and then get that content in front of users. Which will subscribe to you, and you will get to harvest their emails to use for marketing purpose. This platform will also allow you to do scheduling and automation for follow up emails. Just trying to understand if there is still space in this niche. - Thanks in advance