Newsletter is - https://mythicalai.substack.com/
I have written 6 editions so far. I send every Friday.
Twitter has been, by far, the best way to grow my newsletter.
Anytime I find someone talking about generative AI, I add value when I can. If they are talking about a topic I have written about, I will include a link to the newsletter.
For example someone was talking about Notion adding AI. I mentioned I had written an article about AI writing tools and how I think AI is going to become a tool like spell checker. I include the link to my newsletter.
This kind of interaction has driven a majority of the subscribers and it is easy because I already am talking about AI a lot, hence why I started the newsletter.
Note - I am not spamming my newsletter. :) If I haven't written about the topic, I don't talk about the newsletter, I just talk like a human about AI with others.
Add value, don't spam is my motto. :)

Good results!
Thanks! Any tips for me?
You shared great content bro
thank you! What content do you like best? I'll share more.