letterprotect.net is a disposable email domain

letterprotect.net is a disposable temp email domain from adguard.com that provides throwaway email addresses and should be blocked. These temporary addresses are frequently exploited to bypass verification systems and create fake accounts.

Raw API JSON response:

{
    "valid": true,
    "block": true,
    "domain": "letterprotect.net",
    "base_domain": "letterprotect.net",
    "text": "Disposable \/ temporary domain",
    "reason": "Heuristics x3",
    "risk": 95,
    "is_disposable": true,
    "is_email_forwarder": false,
    "is_public_free": false,
    "is_public_premium": false,
    "is_business_provider": false,
    "is_isp_email": false,
    "is_email_api": false,
    "is_web_hosting_email": false,
    "is_self_hosted": true,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "mail.letterprotect.net",
    "mx_ip": "92.255.56.148",
    "mx_info": "Using MX pointer mail.letterprotect.net from DNS with priority: 10",
    "mx_fallback": false,
    "mx_hosts": [
        "mail.letterprotect.net"
    ],
    "mx_ips": [
        "92.255.56.148"
    ],
    "mx_priorities": {
        "mail.letterprotect.net": 10
    },
    "email_provider": null,
    "disposable_provider": "adguard.com",
    "possible_typo": [],
    "domain_age_days": 770,
    "domain_created_at": "2024-07-10T00:00:00+00:00",
    "block_status_changed_at": "2025-06-11T16:11:13+00:00"
}