UK Data: Email and domain checks

uk.co.relinessPublished by reliness.co.ukOfficial publisherv1.4.0Updated Nov 4, 2026

Email and domain checks: deliverable, disposable, role address, MX, SPF, DMARC

The publisher's own server: UK Data: Compliance and finance checks

VerifiedStreamable HTTPWeb executableWeb Search & Scraping Security & Monitoring

Server details

Identifier: uk.co.reliness/email-domain
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Nov 4, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to reliness.co.uk, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

Add a badge to your README

Show readers this MCP server is listed on SourceWeft. The badge links to this page.

[![Listed on SourceWeft](https://sourceweft.com/badge/mcp/uk.co.reliness%2Femail-domain.svg)](https://sourceweft.com/mcp/uk.co.reliness%2Femail-domain?utm_source=readme&utm_medium=badge)

Overview

AI-generated overview

Remote MCP server that lets an assistant validate email addresses and inspect a domain's DNS, mail and authentication records.

What you can do: Check an email address for syntax, MX, disposable, role and free-provider status without sending any message
Look up a domain's A, AAAA, MX, NS, SPF and DMARC records through DNS over HTTPS
Each check consumes one credit from a free daily allowance or a key-based quota
When to use it: Useful when cleaning contact lists, screening sign-ups, or verifying that a domain's mail and SPF/DMARC setup is in place before sending or trusting email.
Requirements: A remote streamable HTTP endpoint; no local install. An optional Authorization bearer key raises the free daily allowance; a free key is obtained from the provider's key endpoint. Network access to the provider is required.

Before you install

The optional Authorization header carries a secret API key; keep it private. Checks cost credits, so usage beyond the free daily allowance depends on a key. Email addresses and domains you submit are sent to a third-party service.

Installation

In SourceWeft

Open UK Data: Email and domain checks in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/uk.co.reliness%2Femail-domain/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "uk-data-email-and-domain-checks": {
      "type": "http",
      "url": "https://ukdata.reliness.co.uk/mcp/email-domain"
    }
  }
}

Tools

email_check

email check

Syntax, MX, disposable, role and free-provider checks on an email address (no message is sent). (cost: 1 credit)

Parametersemail

domain_check

domain check

A, AAAA, MX, NS, SPF and DMARC records for a domain via DNS over HTTPS. (cost: 1 credit)

Parametersdomain

Version history

v1.4.0LatestNov 4, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.