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    Hardening Multi Mailbox Ops into a Four-Mailbox Monitor

    Long-running Codex operations conversation that separated clean-main, branch, credential, and live-mailbox truth; fixed the Keychain secret boundary; onboarded and identity-attested source mailboxes; developed controlled organization and monitoring policies; and iterated the recurring report from dense output into a deterministic four-mailbox workflow.

    Outcome metrics

    1
    Automation created

    Highlights

    • Audited main, draft branches, worktrees, local credentials, and live mailbox authorization independently so a clean-start claim did not collapse distinct truth surfaces.
    • Replaced secret-in-process-arguments Keychain handling with stdin-based behavior and added regression coverage proving secrets stay out of argv and errors.
    • Progressed from a deliberately low-risk sandbox mailbox to four independently resolved and identity-attested source-mailbox aliases.
    • Established controlled additive labeling, root-owned mutation, exact frozen plans, verified receipts, protection holds, and fail-closed mailbox independence.
    • Built recurring monitoring with catch-up windows, deterministic mailbox order, combined reporting, replayable delivery, and notification behavior that distinguishes routine mail from time-sensitive alerts.
    • Captured direct operator feedback that outputs must use bullets, inline links, tables, and clearly emphasized important information rather than dense inline text.

    Source conversation

    Chat Transcript
    Private

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    Created artifacts

    Custom skillMulti Mailbox Ops skill

    Global routing and guarded-operation skill for configured source-mailbox search, read, organization, monitoring, and approved drafting work.

    AutomationFour-mailbox important-mail monitor

    Recurring monitor with identity checks, deterministic coverage windows, combined reporting, catch-up behavior, and controlled additive labeling.

    Actions and follow-ups

    Actions Taken

    • Audited branch, worktree, credential, OAuth, and live-mailbox state.
    • Fixed and tested stdin-safe Keychain storage.
    • Authorized and verified source mailboxes incrementally.
    • Implemented organization policy, standing-label controls, monitoring checkpoints, and report delivery behavior.
    • Ran recurring polls and alert checks under the guarded custom workflow.

    Actions Outstanding

    • Continue treating monitor runs as operational evidence, not independent chat records.
    • Preserve no-send and no-forward boundaries unless a separately reviewed future capability is approved.
    • Reconcile any historical monitor or schema caveats against the current project dossier before changing live behavior.

    Source extracts

    “
    Clean-start requirement
    whats next? is everuting merged in? i want to make sure were starting clean.
    “
    Custom boundary correction
    everything is supposed to be through our custom project
    “
    Presentation requirement
    i dont do chunks of text well. bullets, inline links, tables, cleraly define important stuff. this is how i need to info presented to me.

    Decisions

    • Always classify repository, branch, credential, authorization, and live-provider state separately before saying the project is clean or ready.
    • Route mailbox work only through the custom Multi Mailbox Ops boundary and fail closed rather than falling back to a generic Gmail connector or browser account state.
    • Grant capabilities mailbox by mailbox and retain no-send, no-forward, and no-permanent-delete boundaries even when broader OAuth scopes are technically present.
    • Use exact frozen target sets, root-only execution, provider readback, durable receipts, and stop-on-drift behavior for controlled organization changes.
    • Present recurring results as one deterministic multi-mailbox report with scan-friendly structure and explicit coverage, action, and delivery state.
    • Keep the complete source conversation private because it includes private mailbox operations, OAuth events, message-derived context, and monitor history; publish only this reviewed, curated artifact.