Nirjonadda
Well-known member
It seems ok to me @Nirjonadda if you only need to allow popular email providers (you don't have any of the Russian ones - mail.ru or yandex)
Some reads you might find interesting:
https://support.apple.com/en-us/HT201771
http://gmailgeek.com/facts/gmail-vs-google-mail-the-difference-explained.html
https://help.yahoo.com/kb/SLN2153.html (same with hotmail AFAIK)
I have added some more Domain extensions, Let me know all are correct?
Code:
mac.com
me.com
googlemail.com
Gmail.de
gmail.pl
gmail.ru
yahoo.co.uk
yahoo.fr
live.com
msn.com