Valid Email address

Reason

email@domain.com

Valid email

firstname.lastname@domain.com

Email contains dot in the address field

email@subdomain.domain.com

Email contains dot with subdomain

firstname+lastname@domain.com

Plus sign is considered valid character

email@123.123.123.123

Domain is valid IP address

email@[123.123.123.123]

Square bracket around IP address is considered valid

“email”@domain.com

Quotes around email is considered valid

1234567890@domain.com

Digits in address are valid

email@domain-one.com

Dash in domain name is valid

_______@domain.com

Underscore in the address field is valid

email@domain.name

.name is valid Top Level Domain name

email@domain.co.jp

Dot in Top Level Domain name also considered valid (use co.jp as example here)

firstname-lastname@domain.com

Dash in address field is valid

Invalid Email address

Reason

plainaddress

Missing @ sign and domain

#@%^%#$@#$@#.com

Garbage

@domain.com

Missing username

Joe Smith <email@domain.com>

Encoded html within email is invalid

email.domain.com

Missing @

email@domain@domain.com

Two @ sign

.email@domain.com

Leading dot in address is not allowed

email.@domain.com

Trailing dot in address is not allowed

email..email@domain.com

Multiple dots

あいうえお@domain.com

Unicode char as address

email@domain.com (Joe Smith)

Text followed email is not allowed

email@domain

Missing top level domain (.com/.net/.org/etc)

email@-domain.com

Leading dash in front of domain is invalid

email@111.222.333.44444

Invalid IP format

email@domain..com

Multiple dot in the domain portion is invalid