Due to the increasing number of spam emails,Massive use of temporary email users sending a lot of spam messages to members, So website registration only allows email addresses with the following suffixes to be registered.
duck.com
email.com
care2.com
myway.com
hotpop.com
myspace.com
zapak.com
lavabit.com
bigst.com
live.*
fastmail.*
gawab.com
aim.com
naver.com
fastmail.com
posteo.de
tutanota.com
hushmail.com
gmx.com
mail.ru
mail.com
icloud.com
inbox.com
mail.com
icloud.*
aol.*
yahoo.*
pm.*
proton.*
protonmail.*
yandex.*
outlook.*
gmail.com
Other situations will be prohibited and cannot be normalized. For example, if the gmail email address ucontains commas, like