Is deep503.frenmail.online valid?
deep503.frenmail.online is an email forwarding domain (risk: 100/100). Verify it with the Check-Mail API.
deep503.frenmail.online is an email forwarding domain that allows users to create aliases to hide their real email. These alias emails are frequently used by spammers to bypass verification systems.
Raw API JSON response:
{
"valid": true,
"block": true,
"disposable": false,
"email_forwarder": true,
"domain": "deep503.frenmail.online",
"text": "Highly suspicious",
"reason": "Anomalies detected",
"risk": 100,
"mx_host": "route3.mx.cloudflare.net",
"possible_typo": [],
"mx_ip": "162.159.205.23",
"mx_info": "Using MX pointer route1.mx.cloudflare.net from DNS with priority: 10",
"last_changed_at": "2026-03-24T16:40:39+00:00"
}
Status: Highly suspicious
Domain risk: 100
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Technical Details for deep503.frenmail.online
Risk Score
100 / 100
MX Host
route3.mx.cloudflare.net
Email Provider
Cloudflare Email Routing
Last updated: Mar 24, 2026
How to Block deep503.frenmail.online
You can automatically block deep503.frenmail.online and thousands of other disposable and fraudulent email domains using the free Check-Mail API. Simply query the API with any email domain to get an instant block recommendation.
Example API request:
curl -X POST "https://api.check-mail.org/v2/" \ -H "Authorization: Bearer YOUR_API_KEY" \ -d "domain=deep503.frenmail.online"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
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