{
  "$schema": "https://top-agent-skills.com/schemas/catalog.v1.json",
  "type": "primary-category",
  "slug": "email-messaging",
  "title": "Email & Messaging",
  "shortTitle": "Email & Messaging",
  "description": "Transactional email (Resend, Postmark, SendGrid), SMS, push notifications, Slack and Discord bot workflows.",
  "canonical": "https://top-agent-skills.com/top-skills-for-email-messaging",
  "alternates": {
    "html": "https://top-agent-skills.com/top-skills-for-email-messaging",
    "markdown": "https://top-agent-skills.com/top-skills-for-email-messaging.md",
    "json": "https://top-agent-skills.com/top-skills-for-email-messaging.json"
  },
  "rubricVersion": "1.0",
  "methodology": "https://top-agent-skills.com/about/methodology",
  "contentLastUpdated": "2026-08-18",
  "count": 10,
  "topPick": {
    "slug": "resend-email",
    "name": "resend",
    "score": 59,
    "tagline": "Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys.",
    "url": "https://top-agent-skills.com/skill/resend-email"
  },
  "ranking": [
    {
      "rank": 1,
      "slug": "resend-email",
      "name": "resend",
      "score": 59,
      "tagline": "Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys.",
      "bestFor": "Wiring Resend into an app — transactional sends, batch sends, inbound webhook handling, and domain/template/key management.",
      "notIdealFor": "Non-Resend providers (SendGrid, Postmark, SES) — the SDK calls and webhook signatures are Resend-specific.",
      "provenance": "verified-org",
      "publisher": "Resend",
      "license": "MIT",
      "compatibility": [
        "claude-code",
        "cursor",
        "codex"
      ],
      "install": "npx skills add resend/resend-skills",
      "url": "https://top-agent-skills.com/skill/resend-email",
      "json": "https://top-agent-skills.com/skill/resend-email.json"
    },
    {
      "rank": 2,
      "slug": "email-best-practices",
      "name": "email-best-practices",
      "score": 59,
      "tagline": "Resend's deliverability playbook: SPF/DKIM/DMARC, spam avoidance, bounce handling, and CAN-SPAM/GDPR/CASL compliance.",
      "bestFor": "Diagnosing deliverability problems and setting up authentication, compliance, and accessible markup before email goes to production.",
      "notIdealFor": "Writing the campaign copy itself — pair it with a copywriting skill like email-sequence for the words.",
      "provenance": "verified-org",
      "publisher": "Resend",
      "license": "MIT",
      "compatibility": [
        "claude-code",
        "cursor",
        "codex"
      ],
      "install": "npx skills add resend/resend-skills",
      "url": "https://top-agent-skills.com/skill/email-best-practices",
      "json": "https://top-agent-skills.com/skill/email-best-practices.json"
    },
    {
      "rank": 3,
      "slug": "react-email",
      "name": "react-email",
      "score": 59,
      "tagline": "Build cross-client HTML emails as React components, with a visual editor and Resend-ready rendering.",
      "bestFor": "Authoring transactional email templates (welcome, reset, receipt, notification) as type-safe React components that render across email clients.",
      "notIdealFor": "Plain-text-only sends or teams not using React — the value is the React Email component model.",
      "provenance": "verified-org",
      "publisher": "Resend",
      "license": "MIT",
      "compatibility": [
        "claude-code",
        "cursor",
        "codex"
      ],
      "install": "npx skills add resend/resend-skills",
      "url": "https://top-agent-skills.com/skill/react-email",
      "json": "https://top-agent-skills.com/skill/react-email.json"
    },
    {
      "rank": 4,
      "slug": "agent-email-inbox",
      "name": "agent-email-inbox",
      "score": 59,
      "tagline": "Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email.",
      "bestFor": "Letting an agent receive and act on email safely — support triage, email-to-task pipelines, automated replies with content-safety guards.",
      "notIdealFor": "Outbound-only sending — use the resend skill; this one is about securely processing inbound mail.",
      "provenance": "verified-org",
      "publisher": "Resend",
      "license": "MIT",
      "compatibility": [
        "claude-code",
        "cursor",
        "codex"
      ],
      "install": "npx skills add resend/resend-skills",
      "url": "https://top-agent-skills.com/skill/agent-email-inbox",
      "json": "https://top-agent-skills.com/skill/agent-email-inbox.json"
    },
    {
      "rank": 5,
      "slug": "loops-skills",
      "name": "loops-skills",
      "score": 54,
      "tagline": "SaaS email as skills: Loops API, CLI, LMX markup, deliverability practice.",
      "bestFor": "Product teams on Loops automating contacts, events, transactional sends, and campaign content from code or agents.",
      "notIdealFor": "High-volume raw SMTP or non-Loops stacks — this is platform-specific by design.",
      "provenance": "verified-org",
      "publisher": "Loops",
      "license": "MIT",
      "compatibility": [
        "claude-code"
      ],
      "install": "npx skills add loops-so/skills --skill loops-api",
      "url": "https://top-agent-skills.com/skill/loops-skills",
      "json": "https://top-agent-skills.com/skill/loops-skills.json"
    },
    {
      "rank": 6,
      "slug": "twilio-skills",
      "name": "twilio",
      "score": 53,
      "tagline": "Twilio's official Developer Kit: 55 skills across SMS, WhatsApp, Voice, Verify, SendGrid, and compliance — plus the Twilio MCP. Public beta.",
      "bestFor": "Wiring Twilio messaging or voice into an app — SMS/WhatsApp sends, verification flows, and the A2P 10DLC compliance setup most teams skip until it blocks them.",
      "notIdealFor": "Production-critical work that needs a support SLA — the kit is Public Beta, not covered by Twilio Support Terms or SLA, and some features are unimplemented. For transactional email alone, the focused Resend skill is lighter.",
      "provenance": "verified-org",
      "publisher": "Twilio",
      "license": "MIT",
      "compatibility": [
        "claude-code",
        "cursor",
        "codex"
      ],
      "install": "/plugin marketplace add twilio/ai",
      "url": "https://top-agent-skills.com/skill/twilio-skills",
      "json": "https://top-agent-skills.com/skill/twilio-skills.json"
    },
    {
      "rank": 7,
      "slug": "slack-block-kit",
      "name": "block-kit",
      "score": 51,
      "tagline": "Slack's own Block Kit skill — and the rare vendor skill that needs no token, because it validates against Slack's public API.",
      "bestFor": "Composing Slack messages, modals and Home tabs where hand-written Block Kit JSON is the thing that keeps breaking — it validates output against Slack rather than guessing.",
      "notIdealFor": "Actually sending the message. It generates and validates layouts; delivery is the sibling slack-api skill, which does need a token.",
      "provenance": "verified-org",
      "publisher": "Slack Technologies",
      "license": "MIT",
      "compatibility": [
        "claude-code"
      ],
      "install": "/plugin marketplace add slackapi/slack-skills-plugin",
      "url": "https://top-agent-skills.com/skill/slack-block-kit",
      "json": "https://top-agent-skills.com/skill/slack-block-kit.json"
    },
    {
      "rank": 8,
      "slug": "postmark-skills",
      "name": "postmark-skills",
      "score": 50,
      "tagline": "Transactional email the Postmark way: send, inbound, templates, webhooks.",
      "bestFor": "Teams on Postmark wiring transactional sends, inbound processing, and template management from an agent.",
      "notIdealFor": "Marketing broadcast campaigns — Postmark is transactional-first; last upstream commit is Feb 2026, so check freshness against API changes.",
      "provenance": "verified-org",
      "publisher": "ActiveCampaign (Postmark)",
      "license": "MIT",
      "compatibility": [
        "claude-code"
      ],
      "install": "npx skills add ActiveCampaign/postmark-skills --skill postmark",
      "url": "https://top-agent-skills.com/skill/postmark-skills",
      "json": "https://top-agent-skills.com/skill/postmark-skills.json"
    },
    {
      "rank": 9,
      "slug": "knock-notifications",
      "name": "knock-notification-best-practices",
      "score": 49,
      "tagline": "The multi-channel notification slot nothing else covers: push, in-app and chat alongside email, with copy guidance per channel. No credentials required.",
      "bestFor": "Designing a notification system rather than a single send — which channel carries what, how the copy differs per channel, and when to batch or digest.",
      "notIdealFor": "Sending anything. This is guidance only; the sibling knock-setup skill handles workflows and requires the Knock MCP server and an API key.",
      "provenance": "verified-org",
      "publisher": "Knock",
      "license": "MIT",
      "compatibility": [
        "claude-code"
      ],
      "install": "npx skills add knocklabs/skills --skill knock-notification-best-practices",
      "url": "https://top-agent-skills.com/skill/knock-notifications",
      "json": "https://top-agent-skills.com/skill/knock-notifications.json"
    },
    {
      "rank": 10,
      "slug": "email-sequence",
      "name": "email-sequence",
      "score": 47,
      "tagline": "End-to-end drip campaigns. Copy + timing + branching + benchmarks.",
      "bestFor": "Onboarding, lead nurture, re-engagement, win-back, or product-launch flows.",
      "notIdealFor": null,
      "provenance": "anthropic",
      "publisher": "Anthropic",
      "license": "MIT",
      "compatibility": [
        "claude-code",
        "claude-ai",
        "antigravity"
      ],
      "install": "claude plugin install marketing",
      "url": "https://top-agent-skills.com/skill/email-sequence",
      "json": "https://top-agent-skills.com/skill/email-sequence.json"
    }
  ],
  "faqs": [
    {
      "question": "Resend, Postmark or SendGrid?",
      "answer": "Resend is the modern developer-friendly choice, Postmark has the strongest transactional reputation, SendGrid scales to massive volume. The Skills here cover all three; choice depends on volume and DX preference."
    },
    {
      "question": "How do these Skills handle deliverability?",
      "answer": "The top Skills walk through SPF, DKIM and DMARC setup, validate the DNS records once configured, and warn about common deliverability footguns (shared IP reputation, content-based spam triggers)."
    },
    {
      "question": "Can a Skill build a Slack bot?",
      "answer": "Yes — several handle the full Slack app setup: manifest, OAuth scopes, slash commands, interactive components, and webhook signature verification."
    },
    {
      "question": "Are SMS Skills available?",
      "answer": "Yes — Twilio Skills cover SMS, voice, WhatsApp, and verification flows including 10DLC and toll-free compliance for US numbers."
    },
    {
      "question": "Do these Skills handle suppression lists?",
      "answer": "The top Skills track bounces, complaints and unsubscribes via webhooks and maintain a suppression list — sending to a suppressed address risks the entire sender reputation."
    }
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Top Agent Skills (https://top-agent-skills.com)"
}