---
name: email-deliverability.api.klymax402.com
description: This host provides a single-endpoint API that audits a domain's email deliverability posture by inspecting its SPF, DKIM, DMARC, and MX DNS records and returning a scored report with prioritized remediation recommendations. It is purpose-built for pre-send domain validation and inbox placement diagnostics.
host: email-deliverability.api.klymax402.com
---

# email-deliverability.api.klymax402.com

email-deliverability.api.klymax402.com is a narrow, single-skill host focused exclusively on email authentication record auditing. It serves agents that need a structured, scored assessment of a domain's sending infrastructure before campaign launches, during domain onboarding, or when troubleshooting deliverability regressions. It does not cover email address validation, contact discovery, or general DNS intelligence.

## When to use this host

Use this host when an agent needs to assess whether a domain is correctly configured for email sending — specifically to check SPF, DKIM, DMARC, and MX records and receive a scored, actionable report. Do not use it to validate individual email addresses (use email_verify_address instead), to find email addresses associated with a person or company (use email_find_by_name instead), or to perform general WHOIS or DNS lookups unrelated to email authentication (use domain_lookup_intelligence instead). Because this host has only one skill, it should be invoked only when the explicit goal is a deliverability audit of a domain, not as a general-purpose DNS or email tool.

## Capabilities

### Email Authentication Auditing

Evaluates a domain's SPF, DKIM, DMARC, and MX records and produces a 0–100 deliverability score with prioritized recommendations for remediation.

- **`audit-email-deliverability`** — Checks a domain's SPF, DKIM, DMARC, and MX records and returns a deliverability score from 0 to 100 with prioritized recommendations.

## Skill reference

### `audit-email-deliverability`

**Email Deliverability Audit** — Checks a domain's SPF, DKIM, DMARC, and MX records and returns a deliverability score from 0 to 100 with prioritized recommendations.

*Use when:* Use when an agent needs to assess a domain's email authentication posture before launching email campaigns, onboarding a new sending domain, or diagnosing inbox placement issues.

*Not for:* Do not use for validating a single email address (use email_verify_address instead), finding email addresses by name (use email_find_by_name instead), or general domain WHOIS/DNS lookups (use domain_lookup_intelligence instead).

**Inputs:**

- `domain` (string, required) — Domain to audit for email deliverability (e.g. example.com, gmail.com).

**Returns:** Returns a score of 100, SPF status valid with raw record, DKIM selector results for five selectors, DMARC policy reject, MX records, and a recommendations array.

**Example:** `GET https://email-deliverability.api.klymax402.com/api/audit?domain=example.com`

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