Emailens MCP

Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/emailens-mcp

About

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 25, 2026.

Tools

11 read · 4 write · 0 delete

Secrets

1 (API keys, tokens or passwords)

Install scripts

None found

Runs as

Node.js package

Tools (15)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• analyze_emailAnalyze Emailread-only

  Fix error and warning findings. Info findings are not problems (the email falls back safely there): never remove responsive (@media) or dark-mode CSS to clear them. Quick CSS compatibility analysis, returns per-client scores and one finding per problem, listing the clients it affects. For HTML input each finding carries loc (line, column, offset) and alsoAtLines, so you can edit the exact source. Narrow with clients, or pass detail:'full' for the per-client breakdown with fix snippets. Use audit_email for a full quality report (spam, links, a11y, images, etc.).

• audit_emailAudit Emailread-only

  Fix error and warning findings, and restore anything listed in designRemovals. Info findings are not problems (the email falls back safely there): never remove responsive (@media), dark-mode CSS or rounded corners to clear them. designRemovals compares this version with the first one audited for the same email (or with previousHtml): design the edits deleted, such as @media rules, dark mode, corners, gradients, VML fallbacks or images. Comprehensive email quality audit: CSS compatibility, spam scoring, link validation, accessibility, images, inbox preview, size (Gmail clipping), template varia…

• build_emailBuild Email

  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.

• capture_screenshotsCapture Screenshots

  Capture real email screenshots across 21 clients (Gmail, Outlook, Apple Mail, etc.) with light and dark mode variants. Screenshots are rendered in real browsers and hosted on CDN.

• check_deliverabilityCheck Deliverabilityread-only

  Check email deliverability for a domain , SPF, DKIM, DMARC, MX, BIMI.

• diff_emailsDiff Emailsread-only

  Compare two email HTML versions , shows score changes, fixed issues, and regressions per client.

• fix_emailFix Emailread-only

  Generate a structured fix prompt for email compatibility issues.

• get_build_statusGet Build Statusread-only

  Check a build_email run by runId , returns status, iteration, best compatibility score, and the current best source once available.

• list_clientsList Email Clientsread-only

  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.

• preview_emailPreview Emailread-only

  Full email compatibility preview , transforms HTML for 21 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size.

• sandbox_get_inboxGet Sandbox Inbox

  Retrieve or auto-create your Emailens sandbox test email address for capturing test emails.

• sandbox_get_messageGet Sandbox Messageread-only

  Get complete email details: HTML/text body, parsed headers, spam score, SPF/DKIM/DMARC auth status, and validated links.

• sandbox_list_messagesList Sandbox Messagesread-only

  List recently captured test emails in the Emailens sandbox.

• sandbox_wait_for_emailWait for Sandbox Emailread-only

  Poll and wait for a matching incoming test email in the sandbox (ideal for auth OTPs, magic links, transactional email assertions).

• share_previewShare Preview

  Create a shareable link for an email preview. Recipients see the full analysis without needing an account. Requires the Dev plan or above.

Signals

Stars

7

Forks

2

Open issues

0

Weekly downloads

442

Last commit

Oct 23, 2026 (5 days ago)

Last release

Oct 23, 2026 (5 days ago)

Last package publish

Oct 23, 2026 (5 days ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name

io.github.emailens/mcp

Version

0.13.0

Auth

Auth not stated, API key

Packages

npm @emailens/mcp

License

MIT

Repository

github.com/emailens/mcp

Website

emailens.dev/mcp

First seen

Oct 24, 2026

Last checked

Oct 25, 2026

Source

Official MCP Registrygithub-graphql