deliverability-doctor
Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.
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": {
"deliverability-doctor": {
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}Remote endpoints
https://deliverability-doctor.deliverability-doctor.workers.dev/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟢check_email_security(domain)
Checks whether a domain can be email-spoofed, using public DNS only. Verifies SPF (including the RFC 7208 multiple-record permerror), DMARC policy and reporting, MX, and DKIM at common selectors. Returns a graded report with concrete fixes. Accepts a bare domain, a URL, or an email address. Nothing is sent to the domain.
Input Schema
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"description": "Domain, URL, or email address, e.g. example.com"
}
},
"required": [
"domain"
]
}🟢compare_email_security(domains)
Runs the email-security check on 2–5 domains and returns a comparison table with per-domain grades. Useful for checking your domain against competitors.
Input Schema
{
"type": "object",
"properties": {
"domains": {
"type": "array",
"items": {
"type": "string"
},
"minItems": 2,
"maxItems": 5,
"description": "2–5 domains"
}
},
"required": [
"domains"
]
}Community
Evidence