Sendy

Sendy is a self-hosted email marketing platform that piggybacks on Amazon SES for sending. You pay a one-time fee of $69 to own the software, then just $1 per 10,000 emails sent through SES. The drag-and-drop editor makes campaign building straightforward, and since it runs on your own server, you retain full control over your subscriber data and sending infrastructure.

It's ideal for indie developers, makers, and small newsletter teams who want to minimize email costs and avoid platform lock-in. Compared to monthly subscriptions like Mailchimp or ConvertKit, Sendy's cost model is substantially cheaper once you're sending regularly, which is why it's popular among bootstrapped creators and technical founders building audience at scale.