Campaign Monitor by Marigold vs Kit (formerly ConvertKit)
Campaign Monitor puts email design and reporting first for small businesses and agencies. Kit is a simpler email tool for creators with commerce built in. Pick Campaign Monitor for on-brand B2B sending and Kit for an audience business.
The verdict
For a small B2B team or an agency that cares how every email looks and wants clear reports, I'd pick Campaign Monitor.
If you are a creator, newsletter writer or course seller, I'd pick Kit. Tags and simple automations are easy to run, and you can sell without a separate checkout tool. Kit also has an official MCP server, which Campaign Monitor does not.
Neither is built for deal pipelines or deep lead scoring. If sales needs email on the same record as the deal, look at HubSpot instead. Both price with the size of your list, so model next year's audience.