Is protonmail.ch valid?

protonmail.ch is a valid domain that should be allowed to do sign-ups and registrations. Based on our analysis, you should allow this domain.

Raw API JSON response:

{
    "valid": true,
    "block": false,
    "domain": "protonmail.ch",
    "base_domain": "protonmail.ch",
    "text": "Looks okay",
    "reason": "Heuristics: WM1",
    "risk": 20,
    "is_disposable": false,
    "is_email_forwarder": false,
    "is_public_free": false,
    "is_public_premium": true,
    "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": "mail.protonmail.ch",
    "mx_ip": "185.205.70.128",
    "mx_info": "Using MX pointer mail.protonmail.ch from DNS with priority: 5",
    "mx_fallback": false,
    "mx_hosts": [
        "mail.protonmail.ch",
        "mailsec.protonmail.ch"
    ],
    "mx_ips": [
        "185.205.70.128",
        "185.70.42.128",
        "176.119.200.128",
        "185.205.70.129",
        "176.119.200.129",
        "185.70.42.129"
    ],
    "mx_priorities": {
        "mail.protonmail.ch": 5,
        "mailsec.protonmail.ch": 10
    },
    "email_provider": "Proton Mail",
    "disposable_provider": null,
    "possible_typo": [
        "protonmail.com"
    ],
    "domain_age_days": 4660,
    "domain_created_at": "2013-08-29T00:00:00+00:00",
    "block_status_changed_at": "2020-04-26T16:27:00+00:00"
}