malumail-send

malumail-send is a skill for Claude Code, Codex from maludb-ed/htmx-php-builder. It costs 146 tokens per session (2,404 once invoked), scanned B, original, MIT.

An integration for sending transactional email through the MaluMail REST API, such as welcome, verification, receipt, notification, alert, and password-reset messages. It covers authentication, verified sending domains, request fields, and responses.

In plain words
What is it for?
Use it to add programmatic email sending to an application through MaluMail, using an API key and a verified sending domain.
Why use it?
It provides the documented connection between an application and MaluMail, including the account setup needed before messages can be sent.

Skill for Claude CodeCodex

Part of the htmx-php-builder plugin — 9 skills shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/maludb-ed/htmx-php-builder/malumail-send
Any agent
npx skills add maludb-ed/htmx-php-builder --skill malumail-send
Clone the repo
git clone --depth 1 https://github.com/maludb-ed/htmx-php-builder

Made for: Claude Code, Codex.

Or install htmx-php-builder, the plugin that ships this one along with the rest of its 9 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for malumail-send

README.md
[![agentmods](https://agentmods.dev/badge/skills/maludb-ed/htmx-php-builder/malumail-send.svg)](https://agentmods.dev/skills/maludb-ed/htmx-php-builder/malumail-send)
Your own site
<a href="https://agentmods.dev/skills/maludb-ed/htmx-php-builder/malumail-send"><img src="https://agentmods.dev/badge/skills/maludb-ed/htmx-php-builder/malumail-send.svg" alt="Measured on agentmods" height="20"></a>
Per session 146 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,404 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00146 $0.02404
Opus 5 $0.00073 $0.01202
Sonnet 5 $0.00029 $0.00481
Haiku 4.5 $0.00015 $0.00240

Measured 3d ago against content hash 3764d07a506d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

malumail-send scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

r = requests.post("https://api.malumail.com/v1/send",

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sS -X POST https://api.malumail.com/v1/send \
skills/malumail-send/SKILL.md · 207 lines

How it starts

The opening of the file, as written. The whole thing — 207 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MaluMail Send API

Send transactional email over a small REST API. This is the live contract at api.malumail.com — every field, status code, and behavior below matches the running service. Do not invent fields or endpoints beyond what is listed here.

  • Base URL: https://api.malumail.com (HTTPS only; non-HTTPS → 400)
  • Auth: Authorization: Bearer <api-key> on every request
  • Bodies/responses: JSON

Prerequisites (one-time, in the portal at https://malumail.com/portal/)

  1. Verified sending domain. You may only send from an address whose domain is verified on the account (ownership TXT + SPF include:_spf.malumail.com + DKIM published). Unverified from domain → 403. DKIM/SPF are then applied automatically; you never sign anything.
  2. API key. Portal → API Keys → create. Shown once, unrecoverable. Format mm_ + 48 lowercase hex chars (regex ^mm_[a-f0-9]{48}$). Store as a secret; never commit it. Revoking in the portal makes it 401 immediately.

Send an email — POST /v1/send

Request JSON:

Field Type Required Notes
from string yes Valid email; its domain must be a verified sending domain (else 403).
from_name string no Display name → "Name" <from>.
to string | string[] yes 1–50 addresses. All go in one shared message (recipients see each other).
subject string yes Non-empty.
text string one of Plain-text body.
html string one of HTML body.

At least one of text/html is required. Both → multipart/alternative. Server auto-generates Date, Message-ID, MIME-Version.

Success 200:

{"status":"sent","accepted":["[email protected]"],
 "rejected":[{"email":"[email protected]","reason":"suppressed:bounce"},
             {"email":"bad","reason":"invalid_address"}]}

Read the full file on GitHub · 207 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 207 lines · 146 tokens per session scan B 3764d07a506d

Subscribe to this mod's changes

malumail-send is a skill published in the GitHub repository maludb-ed/htmx-php-builder (8 stars, last pushed 28d ago), licensed MIT. It adds 146 tokens to every session and 2,404 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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