Resend + Ceres

Ceres connects to Resend and reads the delivery and engagement metrics for email you've already sent — who received it, who opened and clicked, what bounced, and what drew a complaint. Your agents pull these numbers on a schedule, so every newsletter and outbound send leaves a measurable trail rather than disappearing the moment it's out the door. On the sending side, the loop is approval-gated: Ceres drafts newsletters and outbound emails, but you approve every send before a single message goes out through Resend. Nothing is sent autonomously.

The Newsletter Editor uses Resend's open and click data to learn which subject lines and angles actually land, then drafts the next broadcast informed by what worked — and waits for your sign-off before it sends. The Sales Development Manager watches delivery and bounce signals on outbound email to keep your sender reputation healthy, pruning addresses that hard-bounce and adjusting drafts when complaint or suppression activity ticks up. Both agents propose; you review the draft; the send only happens after you approve it.

The honest value is a standing measurement-and-drafting loop you don't have to babysit. Resend's metrics become evidence your agents cite — an open-rate dip, a rising bounce rate, a clean delivery run — and that evidence grounds the next draft they bring you. You get the reach and reputation read of an email operator who's actually watching the numbers, with a hard guarantee that every message waits for your explicit approval before it reaches an inbox.