deliverability-audit SKILL.md skillA
deliverability-audit from prosyo-ai/gtm-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add prosyo-ai/gtm-skill/deliverability-audit@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- prosyo-ai/gtm-skill
- Path
plugin/skills/deliverability-audit/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Oct 23, 2026
- Size
- 4,283 bytes
- Repository stars
- 13
- License
- MIT
Use this skill when cold emails land in spam or reply rates suddenly drop: "audit my email deliverability", "why are my emails going to spam", "check my sending setup", "open and reply rates fell off a cliff". Checks domain setup (SPF, DKIM, DMARC, tracking domain), sending volume and patterns, bounce and complaint rates, list quality, content risks and inbox placement, ranks the problems by impact, and produces a fix plan with a recovery timeline.
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
Use this when results drop and the copy has not changed. Most "the campaign stopped working" problems are deliverability problems: the emails are not being seen. ## Inputs - Sending domains and the number of mailboxes on each. - DNS records (SPF, DKIM, DMARC, MX) or permission to look them up. - Metrics per mailbox: volume per day, bounce rate, reply rate, spam complaints, over the last 30-60 days. - Two or three sample emails as sent. ## The play ### 1. Check authentication SPF, DKIM and DMARC must exist, align with the From domain, and pass. Large mailbox providers require all three for bulk senders and reject or junk unauthenticated mail. Read [references/audit-checklist.md](references/audit-checklist.md) for the full checklist and what each failure looks like. ### 2. Check the domain strategy - Cold email from the primary company domain risks the domain that carries invoices and customer mail. Use separate, aged sending domains that redirect to the main site. - Each sending domain has 2-5 mailboxes, not 20. - A custom tracking domain, or no open and click tracking at all for cold outreach. ### 3. Check volume and pattern …
Read the whole file at its exact version.
How to install
mdr add prosyo-ai/gtm-skill/deliverability-audit@sha256:2f2f635797fe52caThe line at the top of this page pins the label v1.0.0, 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.
[](https://markdownregistry.com/a/art_or74ikvrlfnern3g)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 23, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4283 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
prosyo-ai/gtm-skill · 13 stars · license MIT · pushed 2026-10-26 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_or74ikvrlfnern3g GET https://markdownregistry.com/api/v1/resolve?ref=prosyo-ai/gtm-skill/deliverability-audit GET https://markdownregistry.com/api/v1/blob/2f2f635797fe52caef7bc53a5d72186faa4c5be8428e35073bd6902fc526c258
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.