One email.
Everyone it’s for.

A campaign is one email sent once to an audience, now or at a scheduled time: a newsletter, a launch, an announcement. A workflow runs for each contact when something happens, like a signup, and can send several emails over time.

Every email is $0.001, the same as transactional and workflow email, and the first 1,000 each month are free. Contacts are unlimited and free to store, so a large list with a small send costs little.

Yes. Marketing campaigns skip contacts who have unsubscribed and include an unsubscribe link. Bounces and complaints unsubscribe the contact automatically.

Yes. The API can create a campaign, send a test, send or schedule it, cancel it and read its stats, so product updates can be sent from your own tooling or an AI agent through the MCP server.

Yes. Plunk handles newsletters, product updates and announcements to your list, with the same contacts you send receipts and onboarding emails to.