To prevent SPAM accounts! We only accept email addresses:
gmail.com, googlemail.com, yahoo.com, yahoo.co, yahoo.fr, yahoo.es, outlook.com, hotmail.com, hotmail.it, live.co, icloud.com, qq.com, aol.com, msn.com, yandex.com, yandex.ru, zoho.com, zohomail.com, mail.com, gmx.com, att.net, protonmail.com, protonmail.ch, proton.me, pm.me, posteo.at, posteo.de, posteo.eu, mailbox.com