I use claude to run all my email marketing with nitrosend. Seriously awesome, 10x faster than how I used to do newsletters as I'm getting AI to compose them (Claude Code), directly into nitrosend. Their MCP connection means I literally don't need to login anymore. Prompt AI, check the test email, and schedule it. I'm porting my transactional emails across now too, so far so good. I've got 840K authors and readers so cost of email is important, and it's affordable too. email is a vital channel to hit my readers, nitrosend integrated directly into claude has been amazing so far.

connected straight onto my claude which makes for a good user experience, lets me adjust by branding materials, support is top notch and it delivers the emails really smoothly, first pass AI is usually already really great. Much cheaper than Klaviyo