We send transactional email through Resend, but nothing can send newsletters: podcast-rundown signups sit in Mongo newsletter_subscriber with no send pipeline, account emails aren't in any audience, and the unsubscribe our UI copy and privacy policy promise doesn't exist anywhere in the app.

Proposed solution

Sync both email populations to Resend as contacts (official npm:resend SDK; Resend's current model is one global audience, contacts keyed by email, static segments) with three segments:

Podcast Rundown — every newsletter_subscriber row (podcast gate + campaign forms; same marketing consent).
Swamp Club — every non-banned account email, synced at signup, no verification gate.
Everyone — the union, so one broadcast reaches both groups without double-sends.

Mechanism (follows existing repo patterns):

Queue resend_contact_sync (registered in the OTel queue registry, feed-judge-style watcher via everyTick, stale-reclaim, MAX_ATTEMPTS 5, coalescing enqueue on deterministic _id). Messages carry only an identity — email-keyed (subscribe forms) or user-keyed (auth hooks). The consumer recomputes desired segments at delivery and reconciles Resend to them (diff within our three managed segments; never touches other segments and never sends unsubscribed). Paced under Resend's 10 req/s.
Triggers: subscribeToNewsletter (podcast unlock + campaign form routes) enqueues email-kind; databaseHooks.user.create/update/delete.after in lib/auth.ts enqueue user-kind (mirrored in lib/auth_test_utils.ts — the #1475 trap); admin merge enqueues the loser explicitly.
Email-change reconciliation: update.after only carries the new doc, so the sync keeps a per-user shadow of the last-synced email (resend_sync_state). On drain: reconcile current email, and if the shadow differs, re-reconcile the old address — it drops account segments but keeps rundown if independently subscribed. delete.after (receives the deleted doc; verified in better-auth 1.4.18) covers deletion/merge the same way. Ban/unban converges via the same recompute.
Backfill: marker-guarded (resend_contact_backfill_v1 in migrations, badge-backfill pattern), batched cursors over user + newsletter_subscriber, enqueues into the same queue; marker withheld on partial failure. Kicked from startBackgroundServices(); watcher + backfill gated on RESEND_API_KEY (enqueues always on, so enabling the key later drains history).
Unsubscribe sync-back: Svix-verified POST /api/resend/webhook (RESEND_WEBHOOK_SECRET) handles contact.updated/contact.deleted → new unsubscribedAt field + setUnsubscribed() on the newsletter repo. Resend stays source of truth for suppression; our stamp is the Art. 7(3)-style withdrawal record the repo comments already name.

Segments auto-provision by name with ids persisted in resend_sync_state ($setOnInsert to converge pod races).

Alternatives considered

Raw fetch like resend-mailer.ts — SDK preferred now that it covers the segments API; SDK confined to lib/infrastructure/.
Emit-time segment decisions on the queue doc — rejected for recompute-at-delivery (announce-routing precedent): coalescible, ordering-free, self-healing against dashboard drift.
Resend bulk CSV import for backfill — rejected; one queue path for backfill + steady state, and imports skip contact.created webhooks.

Out of scope

Broadcast sending itself; double opt-in; cleanup of contacts for emails changed before this ships.

02Bog Flow

Open

8/4/2026, 8:15:10 PM

No activity in this phase yet.

03Sludge Pulse

adam assigned adam8/4/2026, 8:16:34 PM

adam commented 8/4/2026, 11:02:48 PM

Implementation up: https://github.com/swamp-club/swamp-club/pull/1038 — includes retry backoff on the sync queue (30s×2^attempt, 15m cap) beyond the original plan, so multi-replica 429 bursts during the backfill drain can't park contacts. Post-deploy manual step: register https://swamp-club.com/api/resend/webhook (contact.updated + contact.deleted) in the Resend dashboard and set RESEND_WEBHOOK_SECRET.

Document --restricted-commands flag for swamp serve

vault put: pass tags through to extension provider CreateSecret/setSecret calls

Docs: update manual for 23 new --server commands

Update VaultProvider interface in @systeminit/swamp-testing to support optional tags in put()

Docs: document --grants-file flag for swamp serve

Docs: document --server support for serve reload

Docs: add --tag flag to vault put reference

Docs: update manual for --detach-runs deprecation and HA auto-detection

Document the Codex plugin in swamp docs

Add --server support to CLI commands missing it

Document the swamp Claude Code plugin in the swamp documentation

Make --server a global CLI option

Add --server support to model cancel (server-side run cancellation)

Load grants from external source on swamp serve startup

swamp vault put should support tags for secret governance

Improve hot reload of the deamon, include extension source/bundle changes

Authenticated users must re-login after swamp serve restart

Add --server support to serve reload

Harden queue claim semantics: atomic claims + status-guarded markDelivered/markFailed across app queues

Auto-detect HA mode and deprecate --detach-runs flag

version-drift check (from #236) is a raw string-inequality, false-positives on multi-model manifests and metadata-only bumps

Resend newsletter audience sync: contacts, segments, backfill, unsubscribe sync-back

Move per-login token secrets from vault to encrypted control-plane store

Docs: document macOS TLS trust limitation and SSL_CERT_FILE workaround

Validate swamp serve deployment stack on startup

Docs: serve config file (.swamp/serve.yaml) and --config flag

Serve config file — read swamp serve configuration from YAML

Deno runtime does not trust ISRG Root YR — extensions fail with valid Let's Encrypt certs

Docs: update hot-reload reference to include trust list refresh

Cross-instance client re-attach for multi-instance swamp serve

vercel codegen: inline rawSyncResult in non-unwrap sync path

vercel codegen: unused listAll import blocks extension publish for 4 models

vercel codegen: add round-trip idempotency test for the pipeline

Operatives button on Collectives page does nothing

Track active runs in the control-plane store for cross-instance visibility

validateGlobalArgInputRefs checks step-level inputs but step schema rejects 'inputs' key

Docs: document continuous reconciliation and multi-instance serve flags

Docs: update workflow guard skip output to include guardExpression and guardResult

Make it aware hot reload on the deamon does not take into account trust list changes, or do take into account the trust list for the hot reload.

workflow validate: new 'GlobalArgument input references' check resolves model-definition ${{ inputs.* }} against workflow inputs, false-failing steps that supply the input

Continuous reconciliation for multi-instance swamp serve

Split the score-read circuit breaker so leaderboard pressure can't blank profile scores

oauth_sign_in telemetry records provider as the literal ":id" for every event

Ghost profile bypasses the score-read seam and 500s on a slow ledger

Profile score section blocks the render on a ClickHouse read

Council: set the scoring balance — command tiers, farm-decay parameters, cross-category ratio

Scoring coverage gaps: instrument drop-off, score ripples/mentions, reward invite-converts

Push down the two cheap leaderboard scans: ghost-gate dictionary and eventCounts owner filter

Materialize an active-days-by-id table for the streak board

score-rollup-projector: O(all-time ledger) closure + per-pod fan-out saturates prod ClickHouse CPU

Startup cache hydration for swamp serve instance replacement

Output a log line for steps skipped due to guards

extension quality scorer misreads a template-literal import specifier in generated code as an unresolvable bare import, hard-erroring the whole extension as UNSCORABLE

Add @swamp/kubernetes/statefulset model type

Docs: access token commands reference says plaintext is 'shown once'

Document --restricted-model-types flag for swamp serve

swamp auth server-login ignores SWAMP_SERVE_URL

s3-datastore extension: pullChanged writes namespace-stripped paths to local cache

serve oauth: an unrecognized device-token error kills the whole serve process instead of the bootstrap

s3-datastore: bidirectional sync pull writes namespace-stripped copies to cache root, wedging push with no supported recovery

CLI reports 'HTTP/2 not supported by this client' when the server actually returned 401 — masks auth failures as a transport error

access token mint: allow reusing a revoked token name

extension quality --json exits 1 with 'rubric factors missing' even when a full score was computed (unearned factor, not uncomputable)

serve oauth: startDeviceGrant discards the OAuth error field, making device-code failures undiagnosable

access token rotate: add --vault flag to override inherited vault

Extensions without a repository can't receive issues — including the issue asking them to add one

serve oauth bootstrap: device flow rate-limited to a 45-second window by validateClient counter, shared globally across tenants

workflow edit: after saving an invalid workflow, re-running edit reports "Workflow not found"

Authentication via Google Broken

Plus-addressed emails stripped on invite acceptance, breaking collective join and quest reward

Profile edit broken on Safari

Configurable write paths for object-creating commands (repo-relative swamp root)

Docs: document rollbackOnFailure with safety guidance for external-dependency models

Remote execution tutorial: sample runner output is missing the stdout line that #1462 restored

seadex-latent-bugs: latent product bugs pinned by the wave-2b test backfill

Remote step stdout is not streamed to the workflow runner (log artifact is transferred correctly)

Redactor false positives: HH:MM:SS timestamps masked as IPs, SHA-256 digests masked as secrets (both inside code fences)

Remote execution tutorial: worker token list output and inline workflow-summary block no longer match CLI output

Add rollbackOnFailure for method-level write atomicity

docs: working-with-data tutorial uses removed depends_on step key, blocking the tutorial