Function is163MailHost

background.js:3287–3294

(hostname = '')

}

function is163MailHost(hostname = '') {
  if (typeof navigationUtils !== 'undefined' && navigationUtils?.is163MailHost) {
    return navigationUtils.is163MailHost(hostname);
  }
  return hostname === 'mail.163.com'
    || hostname.endsWith('.mail.163.com')
    || hostname === 'webmail.vip.163.com';
}

function isLocalhostOAuthCallbackUrl(rawUrl) {
  if (typeof navigationUtils !== 'undefined' && navigationUtils?.isLocalhostOAuthCallbackUrl) {