mcp server
Emailens MCP
Email compatibility analysis across 15 clients — preview, audit, fix, diff, deliverability.
Description as published by the maintainer. Source
- version 0.4.1
- active
active — Most recent push to the repository was 2026-07-29.
What this server can do
9 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
analyze_email(html, format)- Quick CSS compatibility analysis , returns warnings and per-client scores. Required: html.
audit_email(html, skip, format)- Comprehensive quality audit , CSS compatibility, spam, links, accessibility, images, inbox preview, size, templates, content overflow, visual bugs. Required: html.
build_email(format, intent, 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. Required: intent.
check_deliverability(domain)- Check email deliverability for a domain , SPF, DKIM, DMARC, MX, BIMI. Required: domain.
diff_emails(after, before, format)- Compare two email HTML versions , shows score changes, fixed issues, and regressions per client. Required: before, after.
fix_email(html, scope, format, selectedClientId)- Generate a structured fix prompt for email compatibility issues. Required: html.
get_build_status(runId)- Check a build_email run by runId , returns status, iteration, best compatibility score, and the current best source once available. Required: runId.
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.
preview_email(html, format, clients)- Full email compatibility preview , transforms HTML for 21 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size. Required: html.
Last successful function declaration observed on . Source: https://emailens.dev/api/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://emailens.dev/api/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| GitHub stars | 6 | Number of GitHub accounts that bookmarked this repository since it was created. It is a bookmark count, not installs, not active users and not quality. | cumulative, all time | GitHub | |
| Last commit | 2026-07-29 | Date of the most recent push to any branch. This is the strongest cheap indicator of whether the project is still maintained. | point in time | GitHub | |
| Open issues | 0 | Open issues plus open pull requests, as GitHub counts them together. A high number can mean an active project or an abandoned one. | as of fetch | GitHub | |
| Latest published version | 0.4.1 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-04-01 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| License | MIT | Licence GitHub detected in the repository. Detection can be wrong; the LICENSE file is authoritative. | as of fetch | GitHub | |
| First listed in the MCP Registry | 2026-04-01 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| repository status | active | The repository exists on GitHub and is not archived. This says nothing about how recently it was worked on. | as of fetch | GitHub | |
| mcp tools declared | 9 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | emailens.dev | |
| mcp endpoint status | ok | The server listed 9 functions when asked. | as of probe | emailens.dev |
Where to get it
Related, by what their authors tagged them
-
ZeroDrop
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Disposable email inboxes for AI agents — OTPs and magic links auto-extracted. No signup needed.
-
RoboParts 机器人零部件兼容性
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-
com.clauxel.antigravityextensiongate/antigravityextensiongate-mcp
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-
io.github.geeks-accelerator/inbed
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AI agent dating — personality matching, compatibility scoring, and real conversations on inbed.ai
-
ai.radmail/radmail-mcp
— last commit 2026-07-04, shares email
Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.
-
ai.sentvia/mcp
— last commit 2026-07-27, shares email
Email for AI agents: inboxes, send/reply/forward, search, threads, webhooks — 21 SentVia tools.
-
com.local-mcp/local-mcp
— last commit 2026-08-06, shares email
Let ChatGPT, Claude & Cursor use your Mac: email, calendar, iMessage, Teams, files. Local, free.
-
MCP Emails
— last commit 2026-08-04, shares email
Read, search, send, organize, draft and schedule email across your inboxes from any MCP client.
-
com.tinysend/tinysend
— last commit 2026-06-23, shares email
Email for agents: newsletters, subscribers, contacts, broadcasts. OAuth sign-in, no API key.
-
e2a — email for AI agents
— last commit 2026-08-06, shares email
Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.
These share tags the maintainers applied themselves, such as email-testing, compatibility, email. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.
This is not a recommendation and not a test result. It is a map of what the authors said their work is about.
How the author describes it
Topics the maintainer set on GitHub: ai, claude, compatibility, developer-tools, email, email-testing, mcp, model-context-protocol.
This record as data
Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.
GET /api/v1/entries/mcp_server.json