Mail Security Tools
DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC).
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"email-security": {
"url": "https://api.mailsecuritytools.com/mcp"
}
}
}Remote endpoints
https://api.mailsecuritytools.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (7)
🟢check_domain_email_security(domain)
Free. Look up a domain's MX, SPF (record, DNS lookup count, all qualifier), DMARC (policy, rua) and DKIM (common selectors, key size) from live DNS and list issues. No payment.
Input Schema
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"minLength": 3,
"maxLength": 320,
"description": "Domain, e.g. example.com (an email or URL on it also works)"
}
},
"required": [
"domain"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢pricing
Free. Prices of the paid tools, payment network and receiving address.
Input Schema
{
"type": "object",
"properties": {},
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢email_security_score(domain)
Grade a domain's email security 0-100 (A-F): SPF 30, DMARC 40, DKIM 25, MX 5, from live DNS, with findings and the top 3 fixes. Read-only. Costs $0.01 USDC via x402; errors are not charged.
Input Schema
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"minLength": 3,
"maxLength": 320,
"description": "Domain, e.g. example.com (an email or URL on it also works)"
}
},
"required": [
"domain"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢check_email_address(email)
Check one email address: syntax, MX / null MX, disposable domain, role account, free provider; verdict ok / risky / undeliverable. No SMTP probe. Costs $0.01 USDC via x402; errors are not charged.
Input Schema
{
"type": "object",
"properties": {
"email": {
"type": "string",
"minLength": 3,
"maxLength": 320,
"description": "Email address"
}
},
"required": [
"email"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢email_fix_plan(domain)
Email security fix plan for one domain: the exact SPF, DKIM and DMARC records to publish (create / replace / keep, name, value, why), in order, with click-path steps for the domain's DNS host and a staged DMARC rollout. Non-sending domains get a lock-down set. Costs $1 USDC via x402; errors are not charged.
Input Schema
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"minLength": 3,
"maxLength": 320,
"description": "Domain, e.g. example.com (an email or URL on it also works)"
}
},
"required": [
"domain"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢bulk_email_security_score(domains)
Score up to 100 domains' email security in one call (SPF 30, DMARC 40, DKIM 25, MX 5 from live DNS): per-domain score, grade and issues, plus a summary with grade counts, domains missing DMARC or SPF, and the worst 10. For MSPs and agents checking a client or vendor list. Costs $0.50 USDC via x402; errors are not charged.
Input Schema
{
"type": "object",
"properties": {
"domains": {
"minItems": 1,
"maxItems": 100,
"type": "array",
"items": {
"type": "string",
"minLength": 3,
"maxLength": 320
},
"description": "Domains, 1-100"
}
},
"required": [
"domains"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢watch_status(watch_id)
Free. Status of a paid email setup watch (created with POST /v1/watch): items, expiry, last check, last webhook delivery and current SPF/DMARC/DKIM/MX state.
Input Schema
{
"type": "object",
"properties": {
"watch_id": {
"type": "string",
"pattern": "^msw_[a-z2-7]{16}$",
"description": "Watch id, e.g. msw_abcdefghijklmnop"
}
},
"required": [
"watch_id"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}Community
Evidence