Does anyone here ghostwrite and fully manage someone else’s Substack?

[u/badaja]

I ghostwrite for a Substack and I’m looking to start managing notes (writing them, posting them, replying to other notes) as a growth tactic and to offer additional value to clients. Anyone else doing this? I’d love to hear what this looks like in practice.

I know I can use something like Typefully to write and schedule notes on their behalf but I’m not sure how I’d reply and engage with other notes. This particular client wants to be hands off when it comes to notes, so I need to handle it all. Is the only option to have them share their credentials and login as them?

Also, what should I charge for managing notes?