--- title: Top Email & Messaging Skills slug: email-messaging type: primary-category canonical: https://top-agent-skills.com/top-skills-for-email-messaging skills: 10 rubric: 1.0 updated: 2026-08-18 --- # Top Email & Messaging Skills **resend** is the top-ranked email & messaging Skill at 59/100: Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys. Transactional email (Resend, Postmark, SendGrid), SMS, push notifications, Slack and Discord bot workflows. 10 Skills indexed, ranked by a published composite score (https://top-agent-skills.com/about/methodology). Content last changed 2026-08-18. ## The ranking ### 1. resend — score 59/100 (verified-org) Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys. - Best for: Wiring Resend into an app — transactional sends, batch sends, inbound webhook handling, and domain/template/key management. - Not ideal for: Non-Resend providers (SendGrid, Postmark, SES) — the SDK calls and webhook signatures are Resend-specific. - Publisher: Resend · MIT - Verified on: claude-code, cursor, codex ```bash npx skills add resend/resend-skills ``` Full entry: https://top-agent-skills.com/skill/resend-email (https://top-agent-skills.com/skill/resend-email.md) ### 2. email-best-practices — score 59/100 (verified-org) Resend's deliverability playbook: SPF/DKIM/DMARC, spam avoidance, bounce handling, and CAN-SPAM/GDPR/CASL compliance. - Best for: Diagnosing deliverability problems and setting up authentication, compliance, and accessible markup before email goes to production. - Not ideal for: Writing the campaign copy itself — pair it with a copywriting skill like email-sequence for the words. - Publisher: Resend · MIT - Verified on: claude-code, cursor, codex ```bash npx skills add resend/resend-skills ``` Full entry: https://top-agent-skills.com/skill/email-best-practices (https://top-agent-skills.com/skill/email-best-practices.md) ### 3. react-email — score 59/100 (verified-org) Build cross-client HTML emails as React components, with a visual editor and Resend-ready rendering. - Best for: Authoring transactional email templates (welcome, reset, receipt, notification) as type-safe React components that render across email clients. - Not ideal for: Plain-text-only sends or teams not using React — the value is the React Email component model. - Publisher: Resend · MIT - Verified on: claude-code, cursor, codex ```bash npx skills add resend/resend-skills ``` Full entry: https://top-agent-skills.com/skill/react-email (https://top-agent-skills.com/skill/react-email.md) ### 4. agent-email-inbox — score 59/100 (verified-org) Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email. - Best for: Letting an agent receive and act on email safely — support triage, email-to-task pipelines, automated replies with content-safety guards. - Not ideal for: Outbound-only sending — use the resend skill; this one is about securely processing inbound mail. - Publisher: Resend · MIT - Verified on: claude-code, cursor, codex ```bash npx skills add resend/resend-skills ``` Full entry: https://top-agent-skills.com/skill/agent-email-inbox (https://top-agent-skills.com/skill/agent-email-inbox.md) ### 5. loops-skills — score 54/100 (verified-org) SaaS email as skills: Loops API, CLI, LMX markup, deliverability practice. - Best for: Product teams on Loops automating contacts, events, transactional sends, and campaign content from code or agents. - Not ideal for: High-volume raw SMTP or non-Loops stacks — this is platform-specific by design. - Publisher: Loops · MIT - Verified on: claude-code ```bash npx skills add loops-so/skills --skill loops-api ``` Full entry: https://top-agent-skills.com/skill/loops-skills (https://top-agent-skills.com/skill/loops-skills.md) ### 6. twilio — score 53/100 (verified-org) Twilio's official Developer Kit: 55 skills across SMS, WhatsApp, Voice, Verify, SendGrid, and compliance — plus the Twilio MCP. Public beta. Full entry: https://top-agent-skills.com/skill/twilio-skills (https://top-agent-skills.com/skill/twilio-skills.md) ### 7. block-kit — score 51/100 (verified-org) Slack's own Block Kit skill — and the rare vendor skill that needs no token, because it validates against Slack's public API. Full entry: https://top-agent-skills.com/skill/slack-block-kit (https://top-agent-skills.com/skill/slack-block-kit.md) ### 8. postmark-skills — score 50/100 (verified-org) Transactional email the Postmark way: send, inbound, templates, webhooks. Full entry: https://top-agent-skills.com/skill/postmark-skills (https://top-agent-skills.com/skill/postmark-skills.md) ### 9. knock-notification-best-practices — score 49/100 (verified-org) The multi-channel notification slot nothing else covers: push, in-app and chat alongside email, with copy guidance per channel. No credentials required. Full entry: https://top-agent-skills.com/skill/knock-notifications (https://top-agent-skills.com/skill/knock-notifications.md) ### 10. email-sequence — score 47/100 (official-anthropic) End-to-end drip campaigns. Copy + timing + branching + benchmarks. Full entry: https://top-agent-skills.com/skill/email-sequence (https://top-agent-skills.com/skill/email-sequence.md) ## About this category For transactional email, the strongest picks are Resend's own provider-authored Skills: the resend API Skill for sending and inbound webhooks, email-best-practices for deliverability (SPF/DKIM/DMARC, bounce handling, CAN-SPAM/GDPR compliance), react-email for cross-client templates, and agent-email-inbox for securely processing inbound mail. The wider category also covers Postmark, SendGrid, Mailgun, SMS (Twilio), push notifications, and the bot-side of Slack and Discord. It handles the actual sending plus the harder parts — deliverability, template management, list segmentation, suppression handling, and webhook handling for bounces and complaints. Common workflows include setting up transactional email with proper authentication, designing multi-language templates, configuring webhooks for delivery events, building Slack bots for internal notifications, sending push notifications via APNs/FCM, debugging deliverability issues, and migrating between email providers without breaking authentication. Several pair with Resend, Postmark, SendGrid, Twilio, Slack or Discord MCP servers for live sending and inbox state. Backend engineers, growth engineers, and product engineers wiring up user notifications use these Skills heavily. Composite scoring weights install count, provenance (provider-authored Skills sit at the top), and how rigorously the Skill handles deliverability — Skills that skip DKIM setup are flagged as incomplete. ## Common questions **Resend, Postmark or SendGrid?** 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. **How do these Skills handle deliverability?** 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). **Can a Skill build a Slack bot?** Yes — several handle the full Slack app setup: manifest, OAuth scopes, slash commands, interactive components, and webhook signature verification. **Are SMS Skills available?** Yes — Twilio Skills cover SMS, voice, WhatsApp, and verification flows including 10DLC and toll-free compliance for US numbers. **Do these Skills handle suppression lists?** 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. --- _Top Agent Skills. Machine-readable twin of https://top-agent-skills.com/top-skills-for-email-messaging._ _JSON: https://top-agent-skills.com/top-skills-for-email-messaging.json · whole catalog: https://top-agent-skills.com/skills.json (CC BY 4.0)_