# Emailens

> Use this tool when you need to ensure HTML email templates render correctly across multiple email clients, solve compatibility issues, and optimize deliverability. Emailens analyzes templates, provides preview rendering, and automatically fixes known issues, making it a valuable resource for email marketers and developers. It accepts HTML email templates as input and outputs compatibility reports, audits, and optimized templates, making it ideal for use during email campaign development and testing.

Canonical page: https://skillsregistry.net/skills/emailens  
JSON: https://api.skillsregistry.net/v1/skills/emailens

## Description

Emailens analyzes HTML email templates for compatibility across 15 major email clients. It provides preview rendering, compatibility auditing, automatic fixing of known issues, diffing between template versions, and deliverability checks. Available as both a hosted API endpoint and a local stdio server via npm.

## Trust

- **Trust score (0–1):** 0.90
- **Verification tier:** scanned
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-09-28

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/emailens)
- **Repository:** <https://github.com/emailens/mcp>

## Use it

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": "emailens"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/emailens` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/emailens/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