improvmx SKILL.md skillA

improvmx from beckyisj/webdev-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add beckyisj/webdev-kit/improvmx@git:20260906.832247b

Pins git:20260906.832247b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
beckyisj/webdev-kit
Path
improvmx/SKILL.md
Versions recorded
1
Latest version
git:20260906.832247b, committed Sep 6, 2026
Size
4,342 bytes
Repository stars
3
License
MIT

Set up free inbound email forwarding on a custom domain with ImprovMX — hello@yourdomain.com lands in your existing Gmail. Generates the exact MX and SPF records, merges SPF with Resend if both are present, verifies DNS with dig, and sends a test. Use when a project needs a real-looking email address without paying for Google Workspace.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# ImprovMX — inbound email forwarding

Give a domain a working `hello@` address in ten minutes, for free, forwarding to an inbox the user already has.

**Argument**: `$ARGUMENTS` is the domain and optionally the destination address (e.g. `mytool.app me@gmail.com`). Ask for whichever is missing.

ImprovMX only **receives**. Outbound programmatic email (forms, magic links, receipts) is `/resend`. They pair: Resend sends the notification, the reply comes back through ImprovMX.

## Process

### 1. Read the current DNS

```bash
dig +short MX <domain>
dig +short TXT <domain> | grep -i spf
dig +short NS <domain>
```

From this you learn three things: whether MX records already exist (Google Workspace, Zoho, an old host), whether an SPF record exists that you must merge into rather than duplicate, and which provider hosts the DNS (the NS answer tells you Cloudflare vs Namecheap vs GoDaddy vs Vercel), which decides the instructions in step 3.

If MX records already point at a real mail provider, stop and say so. Adding ImprovMX on top would hijack the existing mailboxes.

### 2. Produce the records

Give the user this table, filled in:

| Type | Name | Value | Priority |
|---|---|---|---|
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add beckyisj/webdev-kit/improvmx@sha256:25ad06508561e155

The line at the top of this page pins the label git:20260906.832247b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_dkcjcfj44bgtvaai.svg)](https://markdownregistry.com/a/art_dkcjcfj44bgtvaai)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Sep 6, 2026.

versioncommittedcommitsizeaudit
git:20260906.832247b latest2026-09-06 832247b 4,342 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4342 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

beckyisj/webdev-kit · 3 stars · license MIT · pushed 2026-09-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_dkcjcfj44bgtvaai
GET https://markdownregistry.com/api/v1/resolve?ref=beckyisj/webdev-kit/improvmx
GET https://markdownregistry.com/api/v1/blob/25ad06508561e155657638cf9685ed7ce7a56533d7bdc5be846dca9f68af1d73

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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