Cloudflare Email Service

What it does

When your agent uses it

• Building email sending (Workers binding
• Agents SDK email handling
• Integrating email into any app — Workers
• Email deliverability

Example prompts

• “add email to my Worker”
• “/cloudflare-email-service”

Requirements

• Node.js

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

1. 1Domain onboarded? Run npx wrangler email sending list to see which domains have email sending enabled. If the domain isn't listed, run npx…
2. 2Binding configured? Look for send_email in wrangler.jsonc (for Workers)
3. 3postal-mime installed? Run npm ls postal-mime (only needed for receiving/parsing emails)

What it can do on your machine

Read from SKILL.md and the folder at commit 444ace2. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • wrangler
  • npx
  • npm

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Hosts in commands or code, which the agent is likely to contact:

  • developers.cloudflare.com
  • npmjs.com
  • github.com
  • api.cloudflare.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cloudflare Email Service loads about 2k tokens when it runs, and up to ~11k if it reads all its reference files. Until then it costs about 133 tokens; SKILL.md has 825 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~133

When it runs · the whole SKILL.md, loaded when a task matches

~2k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~11k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from hodgef/apiker at commit 444ace2, republished under its MIT licence (© hodgef). 825 words, ~1,982 tokens.

name

cloudflare-email-service

description

Send and receive transactional emails with Cloudflare Email Service (Email Sending + Email Routing). Use when building email sending (Workers binding or REST API), email routing, Agents SDK email handling, or integrating email into any app — Workers, Node.js, Python, Go, etc. Also use for email deliverability, SPF/DKIM/DMARC, wrangler email setup, MCP email tools, or when a coding agent needs to send emails. Even for simple requests like "add email to my Worker" — this skill has critical config details.

// wrangler.jsonc
{ "send_email": [{ "name": "EMAIL" }] }

const response = await env.EMAIL.send({
  to: "user@example.com",
  from: { email: "welcome@yourdomain.com", name: "My App" },
  subject: "Welcome!",
  html: "<h1>Welcome!</h1>",
  text: "Welcome!",
});

© hodgef, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 5 other files (references) in .agents/skills/cloudflare-email-service of hodgef/apiker.

• SKILL.md
• references/cli-and-mcp.md
• references/deliverability.md
• references/rest-api.md
• references/routing.md
• references/sending.md

Open the folder on GitHubat commit 444ace2

Used in 2 other repositories

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 2 other GitHub owners. This page covers the copy in hodgef/apiker, which our catalogue first saw on October 7, 2026.

• try-works/role-model.agents/skills/cloudflare-email-service
• aiskillstore/marketplaceskills/cloudflare/cloudflare-email-service