What email marketing tool to use in 2023?

Hi everyone,

I'm starting out the year working on a new project (a development tracker for startups).

I'll jump straight to the question: What is your preferred email marketing platform for building audiences/micro-saas these days?

I've launched a quick landing page which is collecting email addresses. Currently it's wired to Mailchimp, but I was wondering if there is a more suitable solution?

Thanks!