Ghost
Ghost focuses on running a blog and member newsletter.
What it does
Ghost combines a publishing site, newsletters, and subscriptions.
When to use it
For a niche publication, use one editorial source for the site and email edition.
Visit Ghost official site
beehiiv
beehiiv focuses on newsletter editing, subscriptions, and analytics.
Buttondown
Buttondown focuses on writing and sending newsletters.
Grammarly
Grammarly focuses on English spelling, grammar, and tone suggestions.