Email Host Detector

This tool makes it easy for developers to add "Check your email" buttons that actually take users to their inbox.

Enter any email address and we'll try to:

  • Generate a direct link to their webmail inbox
  • Identify their email provider
  • Show mail server information
Provider Information

Provider:

Domain:

Webmail URL:

Mail Servers:

    Open Webmail

    Know the webmail URL for this provider? Help others by adding it to our database.

    API Usage

    To use the webmail detection API programmatically:

    API URL:

    https://email-host-detector.optionzero.co/api/lookup?email=example@domain.com

    Method: GET

    Response:

    {
    "webmail_found": true,      // indicates if a webmail provider was detected
    "domain": "gmail.com",
    "provider": "Gmail",
    "webmail_url": "https://mail.google.com",
    "icon": "fab fa-google",    // Font Awesome icon class
    "link_text": "visit Gmail",
    "mx_records": [
        "alt1.gmail-smtp-in.l.google.com",
        "alt2.gmail-smtp-in.l.google.com"
    ],
    "html_button": "..."        // HTML code for the button
}

    About This Project

    We built Email Host Detector to solve a common challenge in modern web applications: helping users check their email during critical flows like email verification or magic link authentication.

    Why We Built This

    When building applications that use magic links or email verification:

    • Users need to check their email to complete authentication
    • A direct link to their webmail makes this process seamless - or at least a bit less seam-ful
    • Different email providers have different webmail URLs

    This tool abstracts away that complexity so that developers can send users directly to their email inboxes.