MailValid Email Verification
Verify emails: syntax, MX, SMTP mailbox, disposable, role and catch-all checks. Single and bulk.
MCP server · by mailvalid.io
About
MailValid Email Verification is an MCP server published by mailvalid.io. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-15 and have recorded no change since. As of our marketplace pass on 2026-10-19.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
Requires: X-API-Key header
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http email-verifier https://mailvalid.io/mcp/ --header "X-API-Key: <YOUR_X_API_KEY>"
[mcp_servers.email-verifier]
url = "https://mailvalid.io/mcp/"
http_headers = { "X-API-Key" = "<YOUR_X_API_KEY>" }
{
"mcpServers": {
"email-verifier": {
"url": "https://mailvalid.io/mcp/",
"headers": {
"X-API-Key": "<YOUR_X_API_KEY>"
}
}
}
}
Replace the values in angle brackets with your own. We show the names of the settings, never values.
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.0.0 | No figure published | Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
- Became a product we track
- Official MCP Registry: appeared
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
Fast email validation at the edge: syntax, MX records, disposable-domain detection.
-
Email Validator (MX, Disposable, Typo)
Validate emails without sending mail: syntax, MX, disposable, role and typo checks, SPF/DMARC.
-
Real-time single and bulk email validation (syntax, MX, 5,000+ disposable domains, SMTP).
-
Verify emails (syntax, MX, SMTP mailbox, catch-all), test email DNS and check Spamhaus blocklists.
-
Reoon MCP — wraps the Reoon Email Verifier API (reoon.com)
-
Email validation MCP server using the MailboxValidator API. It can validate email addresses.
-
Bulk Email Verifier & MX Check
Email list check: syntax, domain, MX records, disposable/role addresses (DNS level). Winters Works.
-
Check whether an email address is real and will accept mail before you send to it.
-
Email List Validation Email Verification
Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.
-
Verify email addresses, clean lists, and audit a domain SPF, DKIM, DMARC and MX setup.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
Daily health check plugin for Zoho Mail accounts. Verifies that mail accounts are reachable, reads recent inbox messages, sends test emails, and saves a structured pass/fail…
-
Agent skills for working with Resend to send and receive emails — email API integration, agent inbox, CLI, React Email components, and deliverability best practices. Includes the…
-
Give every Claude Code subagent its own real email address and phone number, all self hosted on the user's machine. AgenticMail runs a local mail server (Stalwart in a Colima or…
-
Reverse the AI in corporate email. For every message Defluff guesses what prompt the sender gave an LLM, classifies urgency (ACTIONABLE / RESPONSE-NEEDED / FYI / NOISE), and…
-
Real-time security filter for MCP tool communications. Works as a Claude Code hook to inspect all data sent to and received from MCP servers. Detects prompt injection, API key…
Has a listing on Claude Code: claude-plugins-official (5)
-
Agent skills for working with Resend to send and receive emails — email API integration, agent inbox, CLI, React Email components, and deliverability best practices. Includes the…
-
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales…
-
Find and verify professional email addresses, search contacts by domain, and enrich company data -- directly in Claude.
-
Dynatrace observability skills: DQL query patterns, application and infrastructure monitoring, log analysis, problem investigation, and incident response workflows, with the…
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
Has a listing on Claude: knowledge-work-plugins (5)
-
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales…
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
-
Official SigNoz plugin for MCP setup, docs, queries, dashboards, and alerts
-
The Vanta plugin connects Claude Code to Vanta's security and compliance platform through the Vanta MCP server. It combines Vanta's test-specific remediation intelligence with…
-
Web scraping, Google search, structured data extraction, and MCP server integration powered by Bright Data. Includes 7 skills: scrape any webpage as markdown (with bot…
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Work with Outlook Email using the configured Microsoft Outlook app connector.
-
Work with Gmail using the configured Gmail app connector.
-
CrowdStrike Falcon Fusion skills for authoring, deploying, and executing Fusion workflows. Includes live action discovery, YAML authoring with schema validation, workflow import…
-
Connect Microsoft Outlook Calendar for scheduling, daily briefs, event prep, and safe meeting changes.
-
Codex Security workflows for security scans, analysis, and investigation.
Has a listing on Community GitHub marketplaces (5)
-
MCP server for Tomba email finder, verification, and contact enrichment API
-
Read Proton Mail, extract bounded attachment text, and create explicitly confirmed drafts.
-
Mail and calendar on your real mailbox (Microsoft 365 or IMAP) through the GigaMail MCP server, with out-of-band human approval on every send, delete and calendar write.
-
Email and collaboration — Exchange, Microsoft 365, Google Workspace, Postfix — mail flow, SPF/DKIM/DMARC, hybrid, migrations — with a mail-collab-specialist agent.
-
Open-source email API for applications and AI agents — transactional sending from any product, per-agent two-way inboxes, HITL approval, structured SPF/DKIM/DMARC evidence, and a…
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Interactive GitHub Copilot canvas for discovering, connecting, and managing hosted MCP servers from an Azure Connector Namespace.
-
Three-layer verification pipeline for AI output. Extracts claims, finds sources, and flags hallucination risks so humans can verify before acting.
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Build and manage Microsoft Dataverse solutions using natural language. Includes table/column creation, solution lifecycle, data operations, and MCP server configuration.
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
workiq-productivity
WorkIQ productivity skills powered by the local WorkIQ CLI — read-only insights across email, meetings, calendar, Teams, SharePoint, projects, and people.
Has a listing on Cursor: cursor/plugins (5)
-
Search, read, and send Microsoft Outlook email, and look up contacts.
-
Find and verify emails, discover companies, and save leads.
-
Let Grok Bot reach MCP servers on your private Tailscale network. On your own tailnet it joins as one tag:grokbot device; on your team's company tailnet, turned on by a team…
-
Manage subscribers, groups, campaigns, and automations.
-
Build campaigns, manage segments, and query people.
Has a listing on Docker MCP Catalog (5)
-
The official MCP server to send emails and interact with Resend.
-
VeyraX MCP is the only connection you need to access all your tools in any MCP-compatible environment.
-
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
-
Give your AI agents trusted access to the full Postman platform.
-
oxylabs-mcp io.oxylabs/oxylabs-mcp
Fetch and process content from specified URLs & sources using the Oxylabs Web Scraper API.
Has a listing on Official MCP Registry (5)
-
Fast email validation at the edge: syntax, MX records, disposable-domain detection.
-
Email Validator (MX, Disposable, Typo)
Validate emails without sending mail: syntax, MX, disposable, role and typo checks, SPF/DMARC.
-
Real-time single and bulk email validation (syntax, MX, 5,000+ disposable domains, SMTP).
-
Verify emails (syntax, MX, SMTP mailbox, catch-all), test email DNS and check Spamhaus blocklists.
-
Reoon MCP — wraps the Reoon Email Verifier API (reoon.com)
Has a listing on npm registry (MCP servers) (5)
-
mcp com.dechonet/mcp
30 security tools for AI agents: phishing links, exposure maps, DNS, SSL, PQC, history, pivots.
-
dav-mcp io.github.PhilflowIO/dav-mcp
AI-orchestrated calendars, contacts & tasks across any DAV platform. 27 tools, field-agnostic.
-
Extract dates and timestamps from logs, data files and code, with their format and position.
-
dealflowpro io.github.jbechtel-97/dealflowpro
Multifamily real estate deal analysis — cap rate, DSCR, IRR, DFP Score, max offer price
-
dejared io.github.HuynhKhanh1402/dejared
Explore, analyze, and decompile Java JAR files via MCP
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Want this mark on your plugin in our catalog?
Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works
You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.