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Couryo free email tools

MCP server · hosted · v1.0.0 · com.couryo/tools
Online · tested 1h agoNEW · 3h agoSeen in the registry 2h ago

Free, no login: verify an email address, check SPF/DKIM/DMARC, explain SMTP errors, build SPF/DMARC.

Website ↗How to connect ↓

What it does

Couryo free email tools is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

From the publisher's description, Electra Index matched it to one capability: email automation. That makes it a candidate for tasks such as run email marketing campaigns or book sales meetings.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence) and are not a test of the tool.

At a glance

Hosted (remote)YES
Local installNO
Version1.0.0
PriceNot in the registry
First seen24 Oct 2026
Last checked2h ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 1h ago (live check)

Hosted endpoint

  • https://mcp.couryo.com/tools streamable-http

In Claude Code: claude mcp add --transport http couryo-free-email-tools https://mcp.couryo.com/tools

MCP settings (Claude Desktop, Cursor and other MCP clients)

{
  "mcpServers": {
    "couryo-free-email-tools": {
      "url": "https://mcp.couryo.com/tools"
    }
  }
}

Live check

Electra Index connected to the hosted endpoint 1h ago

ONLINE Couryo free email tools answered an MCP connection on 24 Oct 2026 and introduced itself as couryo-free-tools 0.1.0 (MCP protocol 2025-06-18).

5 tools offered to AI assistants

  • verify_email · Checks one email address without sending anything: format, typo in big providers ("gmail.com.br" → "gmail.com", "hotmial.com"), disposable inbox, shared mailbox (contato@, sales@) and whether the domain receives email (MX). Verdict valid, r
  • check_domain_dns · Checks the email setup of any domain: SPF (one record, ending, the 10 DNS lookup limit), DKIM on the common selectors (or dkim_selector), DMARC policy and reports, MX and mailbox provider, MTA-STS, TLS-RPT and BIMI. Answers a 0 to 100 score
  • explain_smtp_error · Explains a bounce or SMTP error text ("550 5.7.515 Access denied", "452 4.2.2 mailbox full") in plain words: hard (the address does not work), soft (temporary) or policy (a provider rule, not the address), the provider and the next step. Fr
  • generate_spf · Builds one SPF record (TXT at the domain) from the services that send for it: includes, IPv4 and IPv6, mx and a. Starts with ~all (softfail), the safe choice; use policy fail (-all) once every sender is listed. Remember the limit of 10 DNS
  • generate_dmarc · Builds one DMARC record (TXT at _dmarc.<domain>). Start with policy none and a report address (rua), read the reports, then move to quarantine and reject once every legitimate sender passes SPF or DKIM aligned. Free, no network. / Monta o r

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.

Tasks it helps with

Share of each task's required capabilities it covers
Run email marketing campaigns
Email Automation
50%
Book sales meetings
Email Automation
50%
Draft emails
Email Automation
50%
Follow up on quotes
Email Automation
50%
Manage my inbox
Email Automation
50%
Run satisfaction surveys
Email Automation
50%
Send and chase invoices
Email Automation
50%
Send personalized outreach
Email Automation
33%

Similar tools

Listed for the same task: run email marketing campaigns
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  • MailboxREMOTELOCAL
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Ready-made AI agents

An MCP server is a connector you add to your own assistant. These are finished products that do the same job for you:

Facts & evidence

Each fact shows where it was seen and when.
FactValueEvidenceSourceLast confirmed
Hosted endpointhttps://mcp.couryo.com/toolsDECLAREDSRC-001 Official MCP Registry2h ago
Local install (package)noDECLAREDSRC-001 Official MCP Registry2h ago
Remote access (hosted)yesDECLAREDSRC-001 Official MCP Registry2h ago
Websitehttps://couryo.com/en/toolsDECLAREDSRC-001 Official MCP Registry2h ago
Registry statusactiveDECLAREDSRC-001 Official MCP Registry2h ago
Version1.0.0DECLAREDSRC-001 Official MCP Registry2h ago
MCP serveryesDECLAREDSRC-001 Official MCP Registry2h ago

Change history

  • NEW24 Oct 2026
    first seen in the index

Is this page accurate?

Flag it and our robot re-checks the official source. Reports never change a score.

Questions about Couryo free email tools

How do I connect Couryo free email tools?

Use the hosted endpoint https://mcp.couryo.com/tools in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does Couryo free email tools offer?

When Electra Index connected on 24 Oct 2026, it listed 5 tools: verify_email, check_domain_dns, explain_smtp_error, generate_spf, generate_dmarc. The full list is in "Live check" above.

Is Couryo free email tools online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 1h ago.

What can I use Couryo free email tools for?

Based on its description, it is most relevant to: run email marketing campaigns, book sales meetings, draft emails, follow up on quotes.