# Check email deliverability before sending

Email programs can lose inbox placement because authentication, reputation, or list data is incomplete. This skill organizes supplied evidence into a pre-send deliverability report with clear gaps and next steps.

## Install

```bash
npx skillstore add aaron-he-zhu/deliverability-qa
```

## Metadata

- Status: approved
- Slug: aaron-he-zhu-deliverability-qa
- Version: 19.0.0
- Author version: 19.0.0
- Skillstore revision: r2
- Version status: valid
- Tree hash: 088588f0567305371a1d883aaffa5b8fd36dd2a870c30041907de02448c5fa5e
- Author: aaron-he-zhu
- GitHub username: aaron-he-zhu
- License: Apache-2.0
- Repository: https://github.com/aaron-he-zhu/aaron-marketing-skills/tree/main/email/setup/deliverability-qa
- Ref: adcb3549b15782055d0beb6d29f113d20de08f92
- Supported tools: Claude, Codex, Claude Code
- Audit status: complete
- Agent install advisory: allowed
- Manual install advisory: allowed
- Artifact signature: available
- Audit attestation: unavailable
- Human verification: not\_verified
- Risk factors: filesystem, external\_commands, network, env\_access
- Quality score: 77
- Quality tier: bronze
- Public page: https://skillstore.pages.dev/skills/aaron-he-zhu-deliverability-qa
- Manifest: https://skillstore.pages.dev/api/skills/aaron-he-zhu-deliverability-qa/manifest

## Capabilities

- Reviews supplied SPF, DKIM, DMARC, and BIMI evidence for alignment and gaps.
- Classifies authentication, reputation, inbox placement, content, and hygiene items as Pass, Partial, Fail, Unknown, or N/A.
- Flags missing DMARC reports and missing seed-list tests as required evidence.
- Reviews supplied creative HTML for spam phrases, link issues, text balance, and rendering risks.
- Summarizes hard-bounce and spam-complaint data from a point-in-time ESP report.
- Produces a SEND-S readiness summary when all applicable evidence is available.

## Use Cases

- Pre-send campaign review: Check authentication and inbox-placement evidence before a marketing campaign launches.
- New sending-domain validation: Identify missing SPF, DKIM, DMARC, or BIMI evidence during a domain setup.
- Deliverability incident triage: Organize reputation, complaint, bounce, and creative evidence after spam-folder placement.

## Prompt Templates

### Start a basic pre-flight

```
Run a deliverability pre-flight for my sending domain. Tell me which evidence you need first.
```

### Check authentication records

```
Review these SPF, DKIM, DMARC, and BIMI records for example.com. Mark each item Pass, Partial, Fail, or Unknown.
```

### Assess a campaign

```
Review my DMARC report, inbox-placement test, ESP bounce and complaint rates, and email HTML. Give me a pre-send checklist.
```

### Create a readiness handoff

```
Using this deliverability evidence for a promotional program, produce a complete SEND-S summary. List missing evidence and do not score incomplete items.
```

## Limitations

- It cannot prove mail authentication passes without DNS and DMARC aggregate evidence.
- It does not provide recurring list-hygiene trend monitoring.
- It does not calculate the full email quality score or make final send veto decisions.
- Connector scripts referenced by the skill require separate review and approval before use.

## Best Practices

- Provide current DNS records, a DMARC aggregate report, and a seed-list test together.
- Use evidence from the same sending domain and campaign period.
- Treat Unknown items as evidence gaps instead of passing them by default.

## Anti Patterns

- Do not score readiness when required evidence is missing.
- Do not treat a DNS record as proof that messages pass authentication.
- Do not use this one-time review as a replacement for ongoing list monitoring.

## Security Audit

- Audited at: 2026-07-26T10:11:09.718\+00:00
- Summary: Most static findings are false positives from Markdown code formatting and relative documentation links. Two documented helper invocations execute unreviewed connector scripts, and one helper receives RESEND\_API\_KEY; these require verification and explicit user confirmation before use.

## Stats

- Views: 1
- Downloads: 4
- Favorites: 0
- Popularity score: 0