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Find domains vulnerable to email spoofing

Keep only domains with no enforced DMARC policy, where anyone can send email as them, as a lead list for MSPs and email security vendors.

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Email Security Grader - SPF, DMARC, DKIM, MTA-STS (Bulk)
Email Security Grader - SPF, DMARC, DKIM, MTA-STS (Bulk)dennydevelops/email-security-grader
Domain
Grade
Score
Spoofable
+4 fields
Text
Number
Boolean
List
Object

Input

Domains:apify.com+3
Only spoofable domains:true

Output fields

Domain
Grade
Score
Spoofable
SPF all
DMARC policy
DKIM selectors
MTA-STS

How it works

Sign up on Apify or log in

The Email Security Grader - SPF, DMARC, DKIM, MTA-STS (Bulk) Actor is ready to run with the inputs already set for "Find domains vulnerable to email spoofing". Sign up or log in and you'll land in Apify Console with a copy of this exact task.

Start the "Find domains vulnerable to email spoofing" task

The Email Security Grader - SPF, DMARC, DKIM, MTA-STS (Bulk) Actor will start running based on the input automatically. You can also change all the input fields, like domains and only spoofable domains, to match your specific use case.

Receive the "Find domains vulnerable to email spoofing" output

Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as domain, grade, score, and more.

Integrate into your workflow

The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also run the "Find domains vulnerable to email spoofing" task via API.

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Integrate "Find domains vulnerable to email spoofing" into your workflow

Connect "Find domains vulnerable to email spoofing" with 100+ integrations, or run it via API or MCP.

Webhook

Webhook

n8n

n8n

Make

Make

Zapier

Zapier

Airbyte

Airbyte

Keboola

Keboola

IFTTT

IFTTT

Hubspot

Hubspot

GDrive

GDrive

Gmail

Gmail

Apify MCP

Apify MCP

GitHub

GitHub

Slack

Slack

LangChain

LangChain

LlamaIndex

LlamaIndex

Flowise

Flowise

Pinecone

Pinecone

OpenAI

OpenAI

Mastra

Mastra

Clay

Clay

Frequently asked questions

The Email Security Grader checks SPF, DMARC, DKIM, MTA-STS and BIMI for each domain and gives an A to F grade with the specific issues found.

The Email Security Grader marks a domain spoofable when it has no enforced DMARC policy, so anyone can send email that appears to come from it.

The Email Security Grader is used by MSPs, security vendors and IT teams to find domains that need DMARC and email authentication fixes.