email-deliverability-audit
Run the following command in DeepSeek Harness:
dsh plugin install ChenneyZhuang/email-deliverability-audit
Paste the following prompt into your AI chat to install this plugin:
Install this plugin in DeepSeek Harness by running dsh plugin install ChenneyZhuang/email-deliverability-audit; the full source code is at https://github.com/ChenneyZhuang/email-deliverability-audit
About this plugin
A bounce rate above 5% sends campaigns straight into spam folders and keeps chipping away at domain reputation. Most list-cleaning tools hand back a single score with no evidence behind it. email-deliverability-audit lets the agent run the checks itself: every verdict traces back to a real DNS query made during that run, and a failed probe is recorded as unverified rather than guessed.
The core mechanism is four sequential DNS gates covering format validation, MX presence, domain-to-MX cross-verification, and role-account or placeholder pattern detection. The result is a three-tier verdict (sendable, risky, dead) with the deciding gate annotated. Batch mode takes CSV in and produces CSV out with rows matching input 1:1. The integrity rule is simple: never invent a pass.
Built for marketing teams managing email lists, developers validating audience addresses, and anyone who wants deliverability decisions grounded in reproducible evidence rather than a black-box score. Zero dependencies beyond dig or a Python DNS resolver.
Use Cases
- Validate a full email list in batch before launching a campaign to remove undeliverable addresses
- Periodically clean a mailing list by flagging risky role accounts and dead addresses
- Diagnose a sudden bounce-rate spike by pinpointing which DNS gate is failing
Best For
- Operations or growth teams managing email marketing lists
- Developers who need to validate audience address deliverability
- Email marketing leads watching domain reputation and bounce rates
Related Plugins
Free web search plugin for DeepSeek Harness with web search, X search, and page fetch; no signup or API key required, with automatic multi-engine failover.
AnySearch-powered web and vertical search plugin for DeepSeek Harness, offering real-time search, cleaned URL content, concurrent batch search via native web_search/web_fetch, no API key required.
Pixel-perfect webpage clone tool that uses an agent harness to turn any webpage into a scored, full-page React replica.
A bilingual cost-tracking plugin for DeepSeek Harness with session/daily cost, budget, official & custom provider balance, coding plan quotas, peak/off-peak pricing alerts, and history stats.