Valid email addresses
prettyandsimple@example.com TRUE
very.common@example.com TRUE
disposable.style.email.with+symbol@example.com TRUE
other.email-with-dash@example.com TRUE
x@example.com (one-letter local-part) TRUE
"much.more unusual"@example.com FALSE
"very.unusual.@.unusual.com"@example.com FALSE
"very.(),:;<>[]\".VERY.\"very@\\ \"very\".unusual"@strange.example.com FALSE
example-indeed@strange-example.com TRUE
admin@mailserver1 (local domain name with no TLD) FALSE
#!$%&'*+-/=?^_`{}|~@example.org FALSE
"()<>[]:,;@\\\"!#$%&'-/=?^_`{}| ~.a"@example.org FALSE
" "@example.org (space between the quotes) FALSE
example@localhost (sent from localhost) FALSE
example@s.solutions (see the List of Internet top-level domains) TRUE
user@localserver FALSE
user@tt (although ICANN highly discourages dotless email addresses) FALSE
user@[IPv6:2001:DB8::1] FALSE