!#$%&'*+-/=?^_`{|}~@example.com
user+mailbox@example.com
customer/department=shipping@example.com
$A12345@example.com
!def!xyz%abc@example.com
_somename@example.com
a@example.com
a@x.y
abc.def@example.com
abc-def@example.com
123@example.com
xn--abc@example.com
abc@x.y.z
abc@xyz-example.com
abc@c--n.com
abc@xn--hxajbheg2az3al.xn--jxalpdlp