Apologie the delay,
You'll also need an email provider and a bridge between your community and the app!
It's an external app, providing the necessary features and UI to manage newsletters (and much more) . You'll still have to use an email provider. While they also support SMTP out of the box I wouldn't recommend it. https://spatie.be/docs/laravel-mailcoach/v4/configuring-mail-providers/introduction
So to sum it up: It's probably not exactly what you're searching:) It's just the admin backend to create and manage stuff, which is really amazing and working well for my own needs ( drip campaigns, newsletters, etc..) , but you'll still need a proper mail provider AND if you want to use it in combination with your IPS, you'll need a custom plugin to connect these 2 apps.
Hence you're not a developer, I would probably strongly advice to NOT use this solution;)
One could of course use IPS for this or create an own app similar to this, but I prefered the one time purchase to get all the automation features https://mailcoach.app/automation, especially because it was much cheaper a while ago)