I've been using ConvertKit since day 1 for my newsletters and email courses. I appreciate that it is designed for creators so the features and user experience are straight-forward. It can let you send email broadcasts, set up email sequence, sell products, or even let your audience send you a tip and more.
I've heard that it has the best deliverability in the email marketing space. If you want to share your stories in email format, this is how you do it.