Kit (ConvertKit)

Kit — formerly ConvertKit — leans more toward email marketing automation than the write-and-publish model of Substack or beehiiv. It's less about a hosted reading experience and more about sequences, tagging, and segmenting a list based on what subscribers click or buy, which makes it a common choice for creators who sell something alongside their writing, like a course or a digital product.

The visual automation builder is the standout feature: you can set up rules like "if someone clicks this link, move them into this sequence" without writing any code. It's less turnkey than beehiiv for someone who just wants to hit publish, but for a newsletter tied closely to a business, the automation depth tends to pay for itself.