MailCheap

Agent-first newsletter tool, priced per email sent

What MailCheap does

MailCheap is an open-source newsletter tool by Marc Lou that charges for the emails you send, not for subscribers on your list. AI agents can connect to it to write drafts, schedule and send campaigns (after you say yes), import lists from beehiiv, Substack or Mailchimp, and read stats. Deliverability features like DKIM, SPF, DMARC, staged sending and list cleanup are on by default.

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