Individual skill
email-deliverability-audit
Diagnostic audit for a running cold email program. Checks domain authentication (SPF/DKIM/DMARC), inbox health/reputation from Smartlead, bounce rate by inbox type, and optionally runs a spam placement test via Smartlead's Smart Delivery API. Outputs markdown report + CSV with per-domain/per-inbox scores and concrete action items. Use when reply rates drop, when bounces spike, when onboarding someone else's account, or as a weekly/monthly health check.
skills/email-deliverability-audit/SKILL.md
Source commit 25c5d85fbb5dd3efec97b0ca457cbbc286547476
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
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- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 10, 2026
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Repository context
- Repository stars (not skill ratings)
- 814
- Repository last updated
- Oct 5, 2026
- License
- MIT
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- security Derived category
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SKILL.mdcore · 13,926 bytesSKILL.mdcore · 13,926 bytesSKILL.mdcore · 13,926 bytesSKILL.mdcore · 13,926 bytesSKILL.mdcore · 13,926 bytesSKILL.mdcore · 13,926 bytesreferences/dns-records.mddoc · 5,996 bytesscripts/audit-inboxes.tsruns · 3,533 bytesscripts/audit-performance.tsruns · 11,223 bytesscripts/check-domain-auth.tsruns · 6,936 bytesscripts/run-spam-test.tsruns · 6,207 bytes
Read excerpt
# Email Deliverability Audit
**If your positive reply rate is dropping and you don't know why, start here.** Most of the time the problem is deliverability — your emails aren't reaching inboxes. This skill tells you what's broken.
## What it checks
| Layer | What | How |
|---|---|---|
| DNS auth | SPF, DKIM, DMARC present on each sending domain | `dig` commands |
| Inbox health | Warmup status, reputation, blocks, connection failures | Smartlead email-accounts API |
| Volume health | Daily sent trending, capacity utilization | Smartlead analytics |
| Send + reply rate per inbox | Sent count, reply count, reply rate % over lookback period | Smartlead campaign analytics |
| Bounce rate | Per-inbox and per-domain bounce rate over last 30 days | Smartlead campaign analytics |
| Spam placement | Real inbox-vs-spam test via Smartlead Smart Delivery | optional |