pull_mailchecker_emails.rb

#!/usr/bin/env ruby

require "yaml"

require "json"
require "net/http"

whitelisted_emails = %w(
  onet.pl poczta.onet.pl fastmail.fm hushmail.com
  hush.ai hush.com hushmail.me naver.com qq.com example.com
  yandex.net gmx.com gmx.es webdesignspecialist.com.au vp.com
  onit.com asics.com freemail.hu 139.com mail2world.com slmail.me
  zoho.com zoho.in simplelogin.com simplelogin.fr simplelogin.co
  simplelogin.io aleeas.com slmails.com silomails.com slmail.me
  passinbox.com passfwd.com passmail.com passmail.net
  duck.com mozmail.com dralias.com 8alias.com 8shield.net
  mailinblack.com anonaddy.com anonaddy.me addy.io privaterelay.appleid.com appleid.com
)

existing_emails = File.open("config/disposable_email_domains.txt") { |f| f.read.split("\n") }

remote_emails = [
  "https://raw.githubusercontent.com/FGRibreau/mailchecker/master/list.txt",
  "https://raw.githubusercontent.com/disposable/disposable-email-domains/master/domains.txt",
].flat_map do |url|
  resp = Net::HTTP.get_response(URI.parse(url))

  resp.body.split("\n").flatten
end

result_emails = (existing_emails + remote_emails).map(&:strip).uniq.sort - whitelisted_emails

File.open("config/disposable_email_domains.txt", "w") { |f| f.write result_emails.join("\n") }