Is mailbox.tw valid?

mailbox.tw 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": false,
    "domain": "mailbox.tw",
    "base_domain": "mailbox.tw",
    "text": "Medium risk domain",
    "reason": "Heuristics: OK",
    "risk": 20,
    "is_disposable": false,
    "is_email_forwarder": true,
    "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": false,
    "is_parked": false,
    "is_role_based_email": false,
    "mx_host": "mx1.simplelogin.co",
    "mx_ip": "185.205.70.136",
    "mx_info": "Using MX pointer mx1.simplelogin.co from DNS with priority: 10",
    "mx_fallback": false,
    "mx_hosts": [
        "mx1.simplelogin.co",
        "mx2.simplelogin.co"
    ],
    "mx_ips": [
        "176.119.200.136",
        "185.205.70.136"
    ],
    "mx_priorities": {
        "mx1.simplelogin.co": 10,
        "mx2.simplelogin.co": 20
    },
    "email_provider": "SimpleLogin",
    "disposable_provider": null,
    "possible_typo": [],
    "domain_age_days": null,
    "domain_created_at": null,
    "block_status_changed_at": "2026-06-24T09:35:45+00:00"
}