Emailens MCP
Analyze, audit, fix and diff HTML, MJML, Maizzle and React Email across 21 email clients.
使うべきか
品質と安全性
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"@emailens/mcp"
]
}
}
}実行可能なパッケージ
0.6.2stdioリモートエンドポイント
https://emailens.dev/api/mcpstreamable-httpできること
ツール一覧
ツール（9）
🟢preview_email(html, clients, format)
Full email compatibility preview , transforms HTML for 21 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size.
入力スキーマ
{
"type": "object",
"properties": {
"html": {
"type": "string",
"description": "The email HTML source code"
},
"clients": {
"description": "Optional client ID filter",
"type": "array",
"items": {
"type": "string"
}
},
"format": {
"description": "Input format: 'html' (default), 'jsx', 'mjml', or 'maizzle'",
"type": "string",
"enum": [
"html",
"jsx",
"mjml",
"maizzle"
]
}
},
"required": [
"html"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢analyze_email(html, format)
Quick CSS compatibility analysis , returns warnings and per-client scores.
入力スキーマ
{
"type": "object",
"properties": {
"html": {
"type": "string",
"description": "The email HTML source code"
},
"format": {
"description": "Input format for framework-specific fix snippets",
"type": "string",
"enum": [
"html",
"jsx",
"mjml",
"maizzle"
]
}
},
"required": [
"html"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢audit_email(html, format, skip)
Comprehensive quality audit , CSS compatibility, spam, links, accessibility, images, inbox preview, size, templates, content overflow, visual bugs.
入力スキーマ
{
"type": "object",
"properties": {
"html": {
"type": "string",
"description": "The email HTML source code"
},
"format": {
"description": "Input format",
"type": "string",
"enum": [
"html",
"jsx",
"mjml",
"maizzle"
]
},
"skip": {
"description": "Checks to skip",
"type": "array",
"items": {
"type": "string",
"enum": [
"spam",
"links",
"accessibility",
"images",
"compatibility",
"inboxPreview",
"size",
"templateVariables",
"overflow",
"visual"
]
}
}
},
"required": [
"html"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢fix_email(html, format, scope, selectedClientId)
Generate a structured fix prompt for email compatibility issues.
入力スキーマ
{
"type": "object",
"properties": {
"html": {
"type": "string",
"description": "The email HTML source code to fix"
},
"format": {
"description": "Input format , controls fix syntax",
"type": "string",
"enum": [
"html",
"jsx",
"mjml",
"maizzle"
]
},
"scope": {
"description": "Fix scope",
"type": "string",
"enum": [
"all",
"current"
]
},
"selectedClientId": {
"description": "Client ID for scoped fixes",
"type": "string"
}
},
"required": [
"html"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢list_clients
List all 21 supported email clients with IDs, names, rendering engines, dark mode support, and deprecation status. Use the returned IDs to filter other tools like preview_email or capture_screenshots.
入力スキーマ
{
"type": "object",
"properties": {},
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢diff_emails(before, after, format)
Compare two email HTML versions , shows score changes, fixed issues, and regressions per client.
入力スキーマ
{
"type": "object",
"properties": {
"before": {
"type": "string",
"description": "Original email HTML"
},
"after": {
"type": "string",
"description": "Modified email HTML"
},
"format": {
"description": "Input format",
"type": "string",
"enum": [
"html",
"jsx",
"mjml",
"maizzle"
]
}
},
"required": [
"before",
"after"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢check_deliverability(domain)
Check email deliverability for a domain , SPF, DKIM, DMARC, MX, BIMI.
入力スキーマ
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"minLength": 3,
"pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)+$",
"description": "Domain to check (e.g. 'company.com')"
}
},
"required": [
"domain"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢build_email(intent, format, seedHtml, threshold, maxIterations)
Generate a cross-client-compatible email from a brief using Emailens's self-healing loop (generate → score across 21 clients → repair). Output stays in the framework you choose. Returns a runId immediately , poll get_build_status for progress and the final code. Requires a Pro/Team API key.
入力スキーマ
{
"type": "object",
"properties": {
"intent": {
"type": "string",
"description": "What the email should be and contain , the brief to build from"
},
"format": {
"description": "Output framework: 'html' (default), 'jsx', 'mjml', or 'maizzle'",
"type": "string",
"enum": [
"html",
"jsx",
"mjml",
"maizzle"
]
},
"seedHtml": {
"description": "Optional existing code to improve from instead of starting blank",
"type": "string"
},
"threshold": {
"description": "Target compatibility score, 50-100 (default 90)",
"type": "number"
},
"maxIterations": {
"description": "Max repair rounds, 1-8 (default 5)",
"type": "number"
}
},
"required": [
"intent"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_build_status(runId)
Check a build_email run by runId , returns status, iteration, best compatibility score, and the current best source once available.
入力スキーマ
{
"type": "object",
"properties": {
"runId": {
"type": "string",
"description": "The runId returned by build_email"
}
},
"required": [
"runId"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}コミュニティ
エビデンス