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

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by cybermax.cybermax-tools.workers.dev·dev.workers.cybermax-tools.cybermax/send-email·v1.0.1
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Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

B70/100grade B
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Safety scan
B70/100

full report

Adoption
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Nobody has reviewed Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

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

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Public scan report

scanner v0.1.10 · 2026-10-13 · same rubric, same numbers if you re-run it

1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 57ms (auth required)20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityOAuth resource metadata advertised on 40115/15
  • Maintenanceno repository listed3/15
  • Maintainer identityverified namespace with website, no repo4/10

Findings (1)

  • lowNo source repository listedmaint.no-repo
Overall 70/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

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

Against every graded Email MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
70/100
higher than 40% of 914 Email servers
Uptime
100%
of our recent checks; the typical remote Email server answers 100%
Response time
161 ms
faster than 75% of 607 Email servers

Install Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun in Claude Code, Cursor or VS Code

claude mcp add --transport http send-email https://mcp.apify.com/?tools=cybermax/send-email&via=mcp-registry
Add to Cursor

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

Is Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun MCP server safe?
Mostly: it is graded B (70/100). Read the Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun safety report
How do I install Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun?
It runs remotely at mcp.apify.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun maintained?
The latest release is v1.0.1.
Is Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun?
Servers from other publishers that do the same job: Imap MCP server, Fluxmail MCP server and Proton Mail (unofficial) MCP server.
How does Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun compare with other Email MCP servers?
safety score 70/100 (higher than 40% of 914 Email servers); uptime 100% (of our recent checks; the typical remote Email server answers 100%); response time 161 ms (faster than 75% of 607 Email servers). Full comparison.

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

Same job from other publishers: the closest match first, then the best rated.

  • Imap
    IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants
    A
  • Fluxmail
    Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.
    B
  • Proton Mail (unofficial)
    Unofficial Proton Mail MCP — send, read, search & organize email over SMTP and IMAP
    B
  • Forward Email
    Privacy-focused email: domains, DNS verification, aliases, SMTP sending, mailboxes and calendars.
    A
  • Qmailing
    AI agents read & send email, manage mailboxes, domains and webhooks via the QMailing API.
    A

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