Official MCP RegistryListed
Emailens MCP
Analyze, audit, fix and diff HTML, MJML, Maizzle and React Email across 21 email clients.
First seen 2 Oct 2026. Evidence as of 6 Oct 2026.
13
Tools
From an anonymous probe
1
Source listings
Each with its own history
4
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| analyze_email | Quick CSS compatibility analysis , returns warnings and per-client scores. | Read-only |
| audit_email | Comprehensive quality audit , CSS compatibility, spam, links, accessibility, images, inbox preview, size, templates, content overflow, visual bugs. | Read-only |
| build_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. | Changes data |
| check_deliverability | Check email deliverability for a domain , SPF, DKIM, DMARC, MX, BIMI. | Read-only |
| diff_emails | Compare two email HTML versions , shows score changes, fixed issues, and regressions per client. | Read-only |
| fix_email | Generate a structured fix prompt for email compatibility issues. | Read-only |
| get_build_status | Check a build_email run by runId , returns status, iteration, best compatibility score, and the current best source once available. | Read-only |
| 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. | Read-only |
| preview_email | Full email compatibility preview , transforms HTML for 21 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size. | Read-only |
| sandbox_get_inbox | Retrieve or auto-create your Emailens sandbox test email address for capturing test emails. | Changes data |
| sandbox_get_message | Get complete email details: HTML/text body, parsed headers, spam score, SPF/DKIM/DMARC auth status, and validated links. | Read-only |
| sandbox_list_messages | List recently captured test emails in the Emailens sandbox. | Read-only |
| sandbox_wait_for_email | Poll and wait for a matching incoming test email in the sandbox (ideal for auth OTPs, magic links, transactional email assertions). | Read-only |
Change history
- sandbox_wait_for_email: tool added
- sandbox_list_messages: tool added
- sandbox_get_message: tool added
- sandbox_get_inbox: tool added
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | io.github.emailens/mcp | 2 Oct 2026 | 6 Oct 2026 | 1 |