MCP.Market

Securessmtp MCP server

online · 100% uptime
by securessmtp.com·com.securessmtp/securessmtp·v1.0.0
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Send email, manage sending domains, and read delivery analytics from your SecureSMTP account.

A97/100grade A
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Safety scan
A97/100

full report

Adoption
Growing

0 stars

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

Securessmtp tools

Tool list not cached yet. `describe` through the gateway fetches it live.

Public scan report

scanner v0.1.10 · 2026-09-28 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 594ms (auth required)20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityOAuth resource metadata advertised on 40115/15
  • Maintenancelast push 0 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10
Overall 97/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Securessmtp compares

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

Safety score
97/100
higher than 95% of 916 Email servers
Uptime
100%
of our recent checks; the typical remote Email server answers 100%
Response time
119 ms
faster than 81% of 609 Email servers

Install Securessmtp in Claude Code, Cursor or VS Code

claude mcp add --transport http securessmtp https://securessmtp.com/api/mcp
Add to Cursor

What the publisher says

From the Securessmtp repository's README, as published. We do not edit it. Read it on GitHub

SecureSMTP MCP server

Connect SecureSMTP to Claude and other MCP clients. Send transactional mail, manage sending domains, and read delivery analytics for your account — in natural language.

  • Endpoint: https://securessmtp.com/api/mcp (Streamable HTTP)
  • Auth: OAuth 2.1 (one-click, recommended) or a site API key as a Bearer token
  • Cost: free — every call runs against your own account and stays within your plan limits

What it can do

Every tool is scoped to a single site, so a connection can only ever see or act on that account.

Connect from Claude Code

OAuth (opens a browser to approve):

claude mcp add --transport http securessmtp https://securessmtp.com/api/mcp

Or with a site API key (no browser step):

claude mcp add --transport http securessmtp https://securessmtp.com/api/mcp \
  --header "Authorization: Bearer <your-site-api-key>"

Connect from claude.ai (custom connector)

Requires a claude.ai Pro/Team/Enterprise plan (custom connectors are not available on the free tier).

  1. Settings → Connectors → Add custom connector
  2. URL: https://securessmtp.com/api/mcp
  3. Approve access when the SecureSMTP consent screen appears, and pick which site to grant.

Where to get an API key

Sign in at securessmtp.com, open a site, and copy its API key — the same key the WordPress plugin and REST API use.

How auth works

/.well-known/oauth-protected-resource and /.well-known/oauth-authorization-server. Access tokens are short-lived; refresh tokens rotate.

  • OAuth 2.1 with PKCE and dynamic client registration. Discovery lives at
  • API key — send the site key as Authorization: Bearer .

Links

  • Website: https://securessmtp.com
  • API docs: https://securessmtp.com/docs/api
  • Support: https://securessmtp.com/contact

Nothing above is checked by us. What we check is on the safety report.

Securessmtp: common questions

Is Securessmtp MCP server safe?
Yes, by our scan: it is graded A (97/100). Read the Securessmtp safety report
How do I install Securessmtp?
It runs remotely at securessmtp.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 Securessmtp need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is Securessmtp maintained?
The last commit was 37 days ago (2026-09-28). The latest release is v1.0.0.
Is Securessmtp 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 Securessmtp?
Servers from other publishers that do the same job: Forward Email MCP server, Qmailing MCP server and Mailbox MCP server.
How does Securessmtp compare with other Email MCP servers?
safety score 97/100 (higher than 95% of 916 Email servers); uptime 100% (of our recent checks; the typical remote Email server answers 100%); response time 119 ms (faster than 81% of 609 Email servers). Full comparison.

Alternatives to Securessmtp

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