mguozhen/email-manager-with-db

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<img src="https://cdn-icons-png.flaticon.com/512/732/732200.png" width="80" alt="Email Manager"> <h1 align="center">Email Manager with DB</h1> Multi-account IMAP/SMTP email manager with local SQLite, RFC 8058 one-click unsubscribe, and suppression list — built for cold email outreach that doesn't get blacklisted. <a href="#quick-start"><img src="https://img.shields.io/badge/setup-2min-brightgreen?style=flat-square" alt="2min Setup"></a> <a href="https://agentskills.io"><img src="https://img.shields.io/badge/Agent%20Skills-compatible-blue?style=flat-square" alt="Agent Skills"></a> <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-green?style=flat-square" alt="MIT License"></a> <a href="https://datatracker.ietf.org/doc/html/rfc8058"><img src="https://img.shields.io/badge/RFC%208058-compliant-purple?style=flat-square" alt="RFC 8058"></a> <img src="https://img.shields.io/badge/node-18+-339933?style=flat-square&logo=node.js&logoColor=white" alt="Node 18+"> <a href="#what-makes-this-different">Why</a> • <a href="#quick-start">Quick Start</a> • <a href="#commands">Commands</a> • <a href="#unsubscribe-compliance">Unsubscribe</a> • <a href="#architecture">Architecture</a> --- ## What makes this different Most email libraries just wrap nodemailer. This one adds the stuff that keeps you out of spam folder: - **Multi-account rotation** — switch between Gmail/Outlook/custom SMTP accounts to spread load - **RFC 8058 One-Click Unsubscribe** — Hotmail and Gmail both require this for bulk mail; without it, your delivery tanks - **HMAC-signed unsubscribe tokens** — recipients can't forge unsub requests for other emails - **Automatic suppression list** — unsubscribed addresses are blocked from future sends (shared SQLite) - **Local inbox sync** — IMAP pull into SQLite for fast search, filter, read - **Filter rules** — gmail-style filters that auto-label/archive incoming mail - **Daily send reports** — per-account stats for volume tracking and warmup monitoring ## Quick Start ```bash # Clone into your Claude Code skills directory git clone https://github.com/mguozhen/email-manager-with-db.git \ ~/.claude/skills/email-manager-with-db cd ~/.claude/skills/email-manager-with-db npm install # Add your first account (Gmail with App Password) node cli.js account add \ --email you@gmail.com \ --password "xxxx xxxx xxxx xxxx" \ --imap-host imap.gmail.com \ --smtp-host smtp.gmail.com ``` That's it. Now you can send, receive, search, filter. ## Commands ### Accounts ```bash node cli.js account add --email <email> --password <app-password> node cli.js account list node cli.js account remove <id> node cli.js test <account-id> # verify IMAP+SMTP work ``` ### Sending ```bash node cli.js send <account-id> \ --to recipient@example.com \ --subject "Hello" \ --body "Plain text body" # HTML body with automatic List-Unsubscribe headers node cli.js send <account-id> \ --to recipient@example.com \ --subject "Campaign" \ --html-file campaign.html ``` ### Inbox ```bash node cli.js sync <account-id> # IMAP sync to local DB node cli.js inbox <account-id> --unread # list unread node cli.js read <email-id> # read email content node cli.js search <query> # full-text search ``` ### Suppression list (unsubscribe) ```bash node cli.js unsub list # view all suppressed addresses node cli.js unsub add <email> # manually suppress node cli.js unsub remove <email> # remove from list ``` ### Reports ```bash node cli.js report <account-id> # today's send stats ``` ## Unsubscribe Compliance This is the part most libraries skip. ### What it does Every outbound email automatically gets these headers: ``` List-Unsubscribe: <https://track.yourdomain.com/unsubscribe?e=...&t=HMAC>, <mailto:unsubscribe+HMAC@yourdomain.com> List-Unsubscribe-Post: List-Unsubscribe=One-Click Precedence: bulk ``` ### Why dual HTTPS + mailto matters - **Gmail / Yahoo** prefer the HTTPS link (one-click button in UI) - **Hotmail / Outlook** require `mailto:` fallback — **without it, one-click button won't render and you go to spam** - **RFC 8058** says mail clients should POST to the HTTPS URL; our server handles both GET (browser) and POST (one-click) ### HMAC tokens ```javascript token = hmac_sha256(secret, email.toLowerCase()).slice(0, 16) ``` Recipients can't forge unsub requests for other emails. If someone tries `?e=competitor@corp.com&t=stolen_token`, the verification fails and returns 400. ### Suppression list enforcement Once a recipient clicks unsubscribe: 1. Their email is added to `suppressions` table 2. Next time you call `sendEmail(to: unsubscribed@x.com)`, it throws `SUPPRESSED` error **before** hitting SMTP 3. No accidental re-sends, no compliance violations ### Bypass flags (for transactional mail) ```javascript await sendEmail(accountId, { to: recipient, subject: 'Password reset', text: '...', skipUnsubHeader: true, // Don't add List-Unsubscribe (1:1 transactional) skipSuppressionCheck: true, // Send even if suppressed (account-critical) }); ``` ## Configuration ### Environment variables | Variable | Required | Description | |----------|----------|-------------| | `UNSUB_SECRET` | Recommended | HMAC secret for unsub tokens. Generate: `openssl rand -hex 32` | | `UNSUB_BASE_URL` | Yes (for headers) | Public URL of your tracking/unsub server | | `UNSUB_MAILTO_DOMAIN` | Optional | Domain for `mailto:` fallback (default: `solvea.cx`) | | `TRACKING_DB_PATH` | Optional | Path to shared suppression SQLite | | `EMAIL_DB_PATH` | Optional | Path to main email DB (default: `emails.db` in cwd) | ### Unsubscribe server (Python) You need to run an HTTP server that handles `GET/POST /unsubscribe`. A reference implementation that shares the same SQLite + HMAC secret: ```python # Core logic (see examples/email_tracker.py for full server) def _unsub_token(email): return hmac.new( UNSUB_SECRET.encode(), email.lower().strip().encode(), hashlib.sha256, ).hexdigest()[:16] def _verify_unsub_token(email, token): return hmac.compare_digest(_unsub_token(email), token or "") # GET /unsubscribe?e=<email>&t=<token> → HTML confirmation page # POST /unsubscribe (RFC 8058 one-click) → 200 "unsubscribed" ``` ## Architecture ``` email-manager-with-db/ ├── SKILL.md # Claude Code / Agent Skills definition ├── cli.js # CLI entry point ├── src/ │ ├── accounts.js # Account CRUD │ ├── db.js # SQLite schema + init │ ├── smtp.js # Send email (with auto unsub headers) │ ├── imap.js # IMAP sync │ ├── filters.js # Gmail-style filter rules │ ├── html-to-text.js # Plain-text fallback from HTML │ └── unsubscribe.js # HMAC tokens, suppression list, header building ├── examples/ │ └── email_tracker.py # Reference Python server for /unsubscribe └── tests/ └── test_unsubscribe.js # 24 regression tests ``` ### Data model ```sql -- Main email DB CREATE TABLE accounts (id, email, username, app_password, smtp_host, ...); CREATE TABLE sent_emails (id, account_id, to_addr, subject, body, status, error, sent_at); CREATE TABLE inbox_emails (id, account_id, from_addr, subject, body, unread, ...); CREATE TABLE filters (id, account_id, rule, action, enabled); -- Shared suppression DB (usually tracking.db) CREATE TABLE suppressions (email PRIMARY KEY, reason, source, created_at); ``` ## Running tests ```bash node tests/test_unsubscribe.js ``` ``` === Token generation & verification === ✓ makeToken returns deterministic 16-char hex ✓ makeToken is case-insensitive + trims ✓ different emails produce different tokens ✓ verifyToken accepts valid token ✓ verifyToken rejects invalid token ✓ verifyToken rejects cross-email token === Header building === ✓ buildHeaders includes HTTPS + mailto + One-Click ✓ HTTPS link contains URL-encoded email ✓ mailto link includes HMAC token === Suppression list === ✓ isSuppressed returns null for unknown email ✓ suppress + isSuppressed round-trip ✓ suppress is case-insensitive ✓ unsuppress removes entry ✓ listSuppressions returns array === sendEmail integration === ✓ List-Unsubscribe header injected ✓ List-Unsubscribe-Post header present ✓ mailto: fallback in header (Hotmail compat) ✓ skipUnsubHeader bypasses injection ✓ Suppression blocks send with SUPPRESSED error code ✓ skipSuppressionCheck bypasses block 20 passed, 0 failed ``` ## FAQ <details> <summary>Why SQLite instead of Postgres?</summary> Listmonk's architecture inspired this — single binary, single file DB, no daemon to manage. For under 1M emails, SQLite with WAL mode is faster and operationally simpler than Postgres. </details> <details> <summary>Does this work with Gmail App Passwords?</summary> Yes. Enable 2FA on your Google account, generate an App Password at myaccount.google.com/apppasswords, and use that as the `password`. Standard Gmail SMTP: `smtp.gmail.com:587` or `smtp.gmail.com:465`. </details> <details> <summary>Can I use this without a public unsub server?</summary> The `List-Unsubscribe` header will be omitted if `UNSUB_BASE_URL` is not configured. You can still use the library, but your emails will look more like bulk/spam to ISPs. A Cloudflare tunnel (free) to localhost works fine for low volume. </details> <details> <summary>Is this replacement for Mailgun/SendGrid?</summary> For outbound, yes — if you have your own SMTP reputation (warmed Gmail accounts, custom domain with SPF/DKIM/DMARC). For transactional at scale, no — use a proper ESP. This tool is for cold outreach and small-batch campaigns. </details> ## Contributing PRs welcome. All changes must pass `node tests/test_unsubscribe.js`. ## License [MIT](LICENSE) --- Built for <a href="https://code.claude.com">Claude Code</a> • Inspired by <a href="https://listmonk.app">listmonk</a> and <a href="https://www.rfc-editor.org/rfc/rfc8058.html">RFC 8058</a>

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email-manager-with-db

ソフトウェア開発者

Email account manager with IMAP/SMTP support and local database. Manage multiple email accounts, sync inbox, send emails, search, set filters, and generate daily send reports. Triggers: email manager, manage email, send email, check inbox, email account, imap…

原文の言語: 英語

2026-04-14

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