cargo-mailbox-management@1.5.1

Publisher claims: "Sends email from inboxes Cargo provisions: sets up mailboxes on a sending domain, warms them up and ramps sends from 5 to 40 a day, sends with the `sendEmail` action, and reads replies, delivery events and unsubscribes. Triggers: "set up a sending mailbox", "provision inboxes for outbound", "warm up this mailbox", "how many sends do I have left today", "send this from Cargo", "did they reply", "who unsubscribed", "suppress this recipient", "take me off your list", "never email them again", "what do mailboxes cost", "my mailbox is stuck pending". A mailbox is a recurring monthly credit charge, and every send is gated on basis, suppression, and relevance. Skip when: writing the copy or building the audience, use cargo-gtm; the mailbox belongs in git, use cargo-project." Observed in sandbox: no network, touches nothing outside the project, writes no memory.