mailosaur.com is a disposable email domain

mailosaur.com is a disposable temp email domain from mailosaur.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": "mailosaur.com",
    "base_domain": "mailosaur.com",
    "text": "Disposable \/ temporary domain",
    "reason": "Disposable",
    "risk": 91,
    "is_disposable": true,
    "is_email_forwarder": false,
    "is_public_free": false,
    "is_public_premium": false,
    "is_business_provider": true,
    "is_isp_email": false,
    "is_email_api": false,
    "is_web_hosting_email": false,
    "is_self_hosted": false,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "mailosaur-com.mail.protection.outlook.com",
    "mx_ip": "52.101.68.32",
    "mx_info": "Using MX pointer mailosaur-com.mail.protection.outlook.com from DNS with priority: 0",
    "mx_fallback": false,
    "mx_hosts": [
        "mailosaur-com.mail.protection.outlook.com"
    ],
    "mx_ips": [
        "52.101.68.32",
        "52.101.73.26",
        "52.101.73.11",
        "52.101.68.39"
    ],
    "mx_priorities": {
        "mailosaur-com.mail.protection.outlook.com": 0
    },
    "email_provider": "Exchange Online",
    "disposable_provider": "mailosaur.com",
    "possible_typo": [],
    "domain_age_days": 5036,
    "domain_created_at": "2012-10-22T00:00:00+00:00",
    "block_status_changed_at": "2026-07-21T12:09:38+00:00"
}