Community · Official remote MCP server

The Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server,
connected in one click.

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark. Connect the official Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.

Connect Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun free How it works

Free to start · No credit card · No hosting needed

Use this server

Add Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun to your AI in one minute

Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.

claude mcp add --transport http letterkeel-send-email-via-smtp-resend-sendgrid-m-2 https://mcp.apify.com/?tools=cybermax/send-email&via=mcp-registry

Run in your terminal, then restart Claude Code. The client will open the vendor's sign-in the first time you use it.

Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun · https://mcp.apify.com/?tools=cybermax/send-email&via=mcp-registry

What you can do

What your AI can do with Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun

Real prompts you can type the moment it's connected — no setup, no docs to read.

“What can Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun do for me?”

“Show me the tools Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun exposes.”

Security check

How secure is the Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server?

Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun holds up.

✓ Verified directory serverLetterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun · cybermaxtools.com

Official endpoint

Operated by Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun (cybermaxtools.com) at its documented MCP endpoint — not a third-party mirror or community re-host.

OAuth sign-in — your account, your rules

You grant access from your own Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun account and can revoke it there at any time. gate never sees your password.

Scanned before it goes live

gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.

Watched for drift

If Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.

Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun's server requires OAuth, so it can't be scanned anonymously — connect it in gate and the same scan runs automatically before it goes live.

How it works

Connected in three steps

Connect your gate

Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.

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

Choose Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun in the gate directory. Sign in to your Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun account to grant access.

Use it anywhere

Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun's tools are live in every AI client you've connected — with rules and logging built in.

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

Free to start · No credit card · No hosting needed

Author

Who runs the Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server?

cybermaxtools.com

Homepage More servers from cybermaxtools.com →

Own this server? Claim the listing →

Server facts

The Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server at a glance

Endpointhttps://mcp.apify.com/?tools=cybermax/send-email&via=mcp-registry

Operated byLetterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun (cybermaxtools.com)

CategoryCommunity

Sign-inOAuth — your account, revocable anytime

Available in gateYes — one-click connect

Works withClaude, ChatGPT, Cursor & any MCP client

FAQ

Questions, answered

Is there an official Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server?

Yes — Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun operates its own remote MCP server at mcp.apify.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.

How do I connect Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun to Claude or ChatGPT?

Add gate's gateway URL to your AI client once, then pick Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun in the directory. You sign in to Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun via OAuth to grant access. From then on, Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun's tools are available in every client you've connected to gate.

Do I need to host anything?

No. Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.

Is the Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server safe to connect?

It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.

Is it free?

Yes — you can get started with gate for free and connect Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun in minutes. No credit card required.

More servers