zammad/db/seeds/channels.rb

Channel.create_if_not_exists(
  area: 'Email::Notification',
  options: {
    outbound: {
      adapter: 'smtp',
      options: {
        host: 'host.example.com',
        user: '',
        password: '',
        ssl: true,
      },
    },
  },
  group_id: 1,
  preferences: { online_service_disable: true },
  active: false,
)
Channel.create_if_not_exists(
  area: 'Email::Notification',
  options: {
    outbound: {
      adapter: 'sendmail',
    },
  },
  preferences: { online_service_disable: true },
  active: true,
)