topskills

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Top Email & Messaging Skills

Transactional email (Resend, Postmark, SendGrid), SMS, push notifications, Slack and Discord bot workflows.

10 skills indexed · ranked by composite score · updated August 18, 2026

Top 6 Email & Messaging skills

  1. 1.resend

    Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys.

  2. 2.email-best-practices

    Resend's deliverability playbook: SPF/DKIM/DMARC, spam avoidance, bounce handling, and CAN-SPAM/GDPR/CASL compliance.

  3. 3.react-email

    Build cross-client HTML emails as React components, with a visual editor and Resend-ready rendering.

  4. 4.agent-email-inbox

    Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email.

  5. 5.loops-skills

    SaaS email as skills: Loops API, CLI, LMX markup, deliverability practice.

  6. 6.twilio

    Twilio's official Developer Kit: 55 skills across SMS, WhatsApp, Voice, Verify, SendGrid, and compliance — plus the Twilio MCP. Public beta.

About Email & Messaging

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.

Ranked by score

Best Email & Messaging Skills

Skills that do email & messaging well — ranked transparently.

1
Verified

Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys.

ResendEmailTransactional
Code
Medium3 min
2
Verified

Resend's deliverability playbook: SPF/DKIM/DMARC, spam avoidance, bounce handling, and CAN-SPAM/GDPR/CASL compliance.

EmailDeliverabilitySPF/DKIM/DMARC
Code
Low2 min
3
Verified

Build cross-client HTML emails as React components, with a visual editor and Resend-ready rendering.

React EmailTemplatesTransactional
Code
Medium3 min
4
Verified

Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email.

Inbound EmailAgent SecurityWebhooks
Code
Medium4 min
5
Verified

SaaS email as skills: Loops API, CLI, LMX markup, deliverability practice.

LoopsEmailLifecycle
Code
Low2 min
6
Verified

Twilio's official Developer Kit: 55 skills across SMS, WhatsApp, Voice, Verify, SendGrid, and compliance — plus the Twilio MCP. Public beta.

TwilioSMSWhatsAppVoice
Code
Medium5 min
7
Verified

Slack's own Block Kit skill — and the rare vendor skill that needs no token, because it validates against Slack's public API.

SlackBlock KitModals
Code
Low2 min
8
Verified

Transactional email the Postmark way: send, inbound, templates, webhooks.

PostmarkTransactional EmailWebhooks
Code
Low2 min
9
Verified

The multi-channel notification slot nothing else covers: push, in-app and chat alongside email, with copy guidance per channel. No credentials required.

NotificationsPushMulti-channel
Code
Low1 min
10
Official

End-to-end drip campaigns. Copy + timing + branching + benchmarks.

EmailDripLifecycle
All surfaces
Low1 min

FAQ

Frequently asked

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.

Go deeper

Guides and comparisons for Email & Messaging

Ranked recommendations with the reasoning, per-agent compatibility cuts, and head-to-head verdicts.

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