Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Connector by CyberMax-tools · GitHub account verified by the MCP Registry

IndexedLicense unknownRemote (HTTP)

Install

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

npx agentmarket install connector/cybermax-tools-send-email

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

https://mcp.apify.com?tools=cybermax/send-email Remote (HTTP)

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About

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

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

Tools: No tools found
Secrets: 1 (API keys, tokens or passwords)
Install scripts: Nothing to install (hosted)
Runs as: Hosted (remote endpoint)

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

Authorization

Network hosts it talks to 1

mcp.apify.com · found in remote endpoint, install command

Signals

Last release: Sep 26, 2026 (1 month ago)
Repository: Not found on GitHub (deleted or private)

Details

Registry name: io.github.CyberMax-tools/send-email
Version: 1.0.1
Auth: Bearer token
License: License unknown
Repository: github.com/CyberMax-tools/product-factory
Website: apify.com/cybermax/send-email
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry

Rank

of 44,833 in Connectors

Score

0.573

Security 30%not yet
Popularity 25%0.30
Freshness 20%1.00
Rating 15%not yet
Docs 10%0.73

How ranking works →

Grades

Freshness

Active in the last 30 days. Last activity 1 month ago.

–

Security

Security scan: in progress. Grades from our dependency, secret, code and prompt-injection checks appear here once they launch. Until then, check the code before you install.

Indexed

Found automatically from a public source. Not yet claimed by its publisher.

How grades work →

Availability

100% uptime, last 30 days (1 check)

Last check: 3 days ago
Status: Up, asks for a login or key
Median response: 905 ms

Up
Up, auth required
Down
Not checked
No data

A daily MCP handshake with the remote endpoint. “Auth required” means it answered and wants a login or key. “Not checked” means the URL needs your own account or blocks automated checks.

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Cite this page

Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server. Agent Mart. https://agentmart.dev/connectors/cybermax-tools-send-email (last updated 2026-10-24)