# MailX Email Deliverability

> Use this tool when you need to ensure your emails reach their destinations and avoid spam filters. It checks SPF, DKIM, DMARC, BIMI, and blacklists, and generates email DNS records to improve email deliverability. Ideal for email marketers, IT administrators, and developers who want to troubleshoot and optimize their email sending infrastructure.

Canonical page: https://skillsregistry.net/skills/com-themailx-email-deliverability  
JSON: https://api.skillsregistry.net/v1/skills/com-themailx-email-deliverability

## Description

Check SPF/DKIM/DMARC/BIMI, blacklists, SMTP/IMAP; DNS lookups; generate email DNS records.

## Trust

- **Trust score (0–1):** 0.80
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-05-10

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/com.themailx%2Femail-deliverability)

## Use it

MCP endpoint published by the skill: `https://themailx.com/mcp`

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "com-themailx-email-deliverability"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/com-themailx-email-deliverability` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/com-themailx-email-deliverability/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt