Ok, @LukeVideo I was thinking, i need a model to get subscribers first then once the post is created or published, tho the post are scraped data, but once saved, it will send the newly saved post to the subscribers
Yeah I assumed you already had a user/subscriber model. Yeah take a look at generic views I guess you'll find most of what you need to create that subscriber model. If you want it to also be a user take a look at the simpleisbetterthancomex blog there is an excellent article on that use case. You LL have to search tho it's not one of the latest articles.
It seems right. Also look a how you can override your save function to include the sending of the newsletter. Also be sure to also keep track of it has already been saved as if you edit it you don't want to send it on each edit