Validator

```
"Mary Smith <mary@example.net>"
```
Valid!

"Mary Smith <mary@x.test>, jdoe@example.org, Who? <one@y.test>"

Valid!

"A Group:Ed Jones <c@a.test>,joe@where.test,John <jdoe@one.test>;"

Valid!

```
"Undisclosed recipients:;"
```
Valid!

"\"Mary Smith: Personal Account\" <smith@home.example>"

Valid!

```
"John Doe <jdoe@machine.example>"
```
Valid!

"Pete(A nice \\) chap) <pete(his account)@silly.test(his host)>"

Valid!

"A Group(Some people)\r\n    :Chris Jones <c@(Chris's host.)public.example>,\r\n      joe@example.org,\r\n  John <jdoe@one.test> (my dear friend); (the end of the group)"

Valid!

"(Empty list)(start)Hidden recipients  :(nobody(that I know))  ;"

Valid!

"Mary Smith <@node.test:mary@example.net>, , jdoe@test  . example"

Valid!

"Joe Q. Public <john.q.public@example.com>"

Valid!

"John Doe <jdoe@machine(comment).  example>"

Valid!

"Mary Smith\r\n  \r\n  <mary@example.net>"

Valid!

"<boss@nil.test>, \"Giant; \\\"Big\\\" Box\" <sysservices@example.net>"

Valid!

```
"!#$%&`*+/=?^`{|}~@iana.org"
```
Valid!
```
"(\007;)mary@example.net"
```
Valid!
```
"\"\\\n\"@x.test"
```
Valid!
```
"\"\\a\"@x.test"
```
Valid!
```
"\"\007\"@x.test"
```
Valid!
```
"\"\\\007\"@x.test"
```
Valid!
```
"pete@[255.255.255.255]"
```
Valid!
```
"\"mary\"@example.net"
```
Valid!
```
"\"\\\"\"@example.net"
```
Valid!
```
"\"john\".\"public\"@example.com"
```
Valid!
```
"\"mary smith\"@home.example"
```
Valid!
```
"\"mary\".smith@home.example"
```
Valid!
```
"\"mary\\\000\"@home.example"
```
Valid!
```
" richard @home.example"
```
Valid!
```
"richar@ home .example"
```
Valid!
```
"mary . smith@y.test"
```
Valid!
```
"\r\n jdoe@example.net"
```
Valid!
```
"\r\n \r\n jdoe@example.net"
```
Valid!
```
"(comment)smith@home.example"
```
Valid!
```
"(comment(comment))smith@home.example"
```
Valid!
```
"smith@(comment)home.example"
```
Valid!
```
"smith@(comment)[255.255.255.255]"
```
Valid!

"robert@xn--hxajbheg2az3al.xn--jxalpdlp"

Valid!

```
"xn--robert@x.test"
```
Valid!
```
"stephane+blog@bortzmeyer.org"
```
Valid!
```
"{tropdur}@example.org"
```
Valid!
```
"c&a@hotmail.com"
```
Valid!
```
"directeur@arts-premiers.museum"
```
Valid!
```
"\"Stephane[Bortzmeyer]\"@laposte.net"
```
Valid!
```
"first.last@iana.org"
```
Valid!

"1234567890123456789012345678901234567890123456789012345678901234@iana.org"

Valid!

```
"\"first\\\"last\"@iana.org"
```
Valid!
```
"\"first@last\"@iana.org"
```
Valid!
```
"\"first\\last\"@iana.org"
```
Valid!
```
"first.last@[12.34.56.78]"
```
Valid!
```
"first.last@[IPv6:::12.34.56.78]"
```
Valid!

"first.last@[IPv6:1111:2222:3333::4444:12.34.56.78]"

Valid!

"first.last@[IPv6:1111:2222:3333:4444:5555:6666:12.34.56.78]"

Valid!

"first.last@[IPv6:::1111:2222:3333:4444:5555:6666]"

Valid!

"first.last@[IPv6:1111:2222:3333::4444:5555:6666]"

Valid!

"first.last@[IPv6:1111:2222:3333:4444:5555:6666::]"

Valid!

"first.last@[IPv6:1111:2222:3333:4444:5555:6666:7777:8888]"

Valid!

"first.last@x23456789012345678901234567890123456789012345678901234567890123.iana.org"

Valid!

```
"first.last@3com.com"
```
Valid!
```
"first.last@123.iana.org"
```
Valid!

"first.last@[IPv6:1111:2222:3333::4444:5555:12.34.56.78]"

Valid!

"first.last@[IPv6:1111:2222:3333::4444:5555:6666:7777]"

Valid!

```
"first.last@example.123"
```
Valid!
```
"first.last@com"
```
Valid!
```
"\"Abc\\@def\"@iana.org"
```
Valid!
```
"\"Fred\\ Bloggs\"@iana.org"
```
Valid!
```
"\"Joe.\\Blow\"@iana.org"
```
Valid!
```
"\"Abc@def\"@iana.org"
```
Valid!
```
"\"Fred Bloggs\"@iana.org"
```
Valid!
```
"user+mailbox@iana.org"
```
Valid!
```
"customer/department=shipping@iana.org"
```
Valid!
```
"$A12345@iana.org"
```
Valid!
```
"!def!xyz%abc@iana.org"
```
Valid!
```
"_somename@iana.org"
```
Valid!
```
"dclo@us.ibm.com"
```
Valid!
```
"peter.piper@iana.org"
```
Valid!
```
"\"Doug \\\"Ace\\\" L.\"@iana.org"
```
Valid!
```
"test@iana.org"
```
Valid!
```
"TEST@iana.org"
```
Valid!
```
"1234567890@iana.org"
```
Valid!
```
"test+test@iana.org"
```
Valid!
```
"test-test@iana.org"
```
Valid!
```
"t*est@iana.org"
```
Valid!
```
"+1~1+@iana.org"
```
Valid!
```
"{_test_}@iana.org"
```
Valid!
```
"\"[[ test  ]]\"@iana.org"
```
Valid!
```
"test.test@iana.org"
```
Valid!
```
"\"test.test\"@iana.org"
```
Valid!
```
"test.\"test\"@iana.org"
```
Valid!
```
"\"test@test\"@iana.org"
```
Valid!
```
"test@123.123.123.x123"
```
Valid!
```
"test@123.123.123.123"
```
Valid!
```
"test@[123.123.123.123]"
```
Valid!
```
"test@example.iana.org"
```
Valid!
```
"test@example.example.iana.org"
```
Valid!
```
"\"test\\test\"@iana.org"
```
Valid!
```
"test@example"
```
Valid!
```
"\"test\\blah\"@iana.org"
```
Valid!
```
"\"test\\\"blah\"@iana.org"
```
Valid!
```
"customer/department@iana.org"
```
Valid!
```
"_Yosemite.Sam@iana.org"
```
Valid!
```
"~@iana.org"
```
Valid!
```
"\"Austin@Powers\"@iana.org"
```
Valid!
```
"Ima.Fool@iana.org"
```
Valid!
```
"\"Ima.Fool\"@iana.org"
```
Valid!
```
"\"Ima Fool\"@iana.org"
```
Valid!
```
"\"first\".\"last\"@iana.org"
```
Valid!
```
"\"first\".middle.\"last\"@iana.org"
```
Valid!
```
"\"first\".last@iana.org"
```
Valid!
```
"first.\"last\"@iana.org"
```
Valid!

"\"first\".\"middle\".\"last\"@iana.org"

Valid!

```
"\"first.middle\".\"last\"@iana.org"
```
Valid!
```
"\"first.middle.last\"@iana.org"
```
Valid!
```
"\"first..last\"@iana.org"
```
Valid!
```
"\"first\\\\\\\"last\"@iana.org"
```
Valid!
```
"first.\"mid\\dle\".\"last\"@iana.org"
```
Valid!
```
"\"test blah\"@iana.org"
```
Valid!
```
"(foo)cal(bar)@(baz)iamcal.com(quux)"
```
Valid!
```
"cal@iamcal(woo).(yay)com"
```
Valid!
```
"cal(woo(yay)hoopla)@iamcal.com"
```
Valid!
```
"cal(foo\\@bar)@iamcal.com"
```
Valid!
```
"cal(foo\\)bar)@iamcal.com"
```
Valid!
```
"first().last@iana.org"
```
Valid!

"pete(his account)@silly.test(his host)"

Valid!

```
"c@(Chris's host.)public.example"
```
Valid!
```
"jdoe@machine(comment). example"
```
Valid!
```
"1234 @ local(blah) .machine .example"
```
Valid!
```
"first(abc.def).last@iana.org"
```
Valid!
```
"first(a\"bc.def).last@iana.org"
```
Valid!
```
"first.(\")middle.last(\")@iana.org"
```
Valid!
```
"first(abc\\(def)@iana.org"
```
Valid!

"first.last@x(1234567890123456789012345678901234567890123456789012345678901234567890).com"

Valid!

```
"a(a(b(c)d(e(f))g)h(i)j)@iana.org"
```
Valid!
```
"name.lastname@domain.com"
```
Valid!
```
"a@b"
```
Valid!
```
"a@bar.com"
```
Valid!
```
"aaa@[123.123.123.123]"
```
Valid!
```
"a@bar"
```
Valid!
```
"a-b@bar.com"
```
Valid!
```
"+@b.c"
```
Valid!
```
"+@b.com"
```
Valid!
```
"a@b.co-foo.uk"
```
Valid!
```
"\"hello my name is\"@stutter.com"
```
Valid!
```
"\"Test \\\"Fail\\\" Ing\"@iana.org"
```
Valid!
```
"valid@about.museum"
```
Valid!
```
"shaitan@my-domain.thisisminekthx"
```
Valid!
```
"foobar@192.168.0.1"
```
Valid!
```
"\"Joe\\Blow\"@iana.org"
```
Valid!

"HM2Kinsists@(that comments are allowed)this.is.ok"

Valid!

```
"user%uucp!path@berkeley.edu"
```
Valid!
```
"first.last @iana.org"
```
Valid!

"cdburgess+!#$%&'*-/=?+_{}|~test@gmail.com"

Valid!

"first.last@[IPv6:a1:a2:a3:a4:b1:b2:b3::]"

Valid!

```
"first.last@[IPv6:::]"
```
Valid!
```
"first.last@[IPv6:::b4]"
```
Valid!
```
"first.last@[IPv6:::b3:b4]"
```
Valid!
```
"first.last@[IPv6:a1::b4]"
```
Valid!
```
"first.last@[IPv6:a1::]"
```
Valid!
```
"first.last@[IPv6:a1:a2::]"
```
Valid!

"first.last@[IPv6:0123:4567:89ab:cdef::]"

Valid!

"first.last@[IPv6:0123:4567:89ab:CDEF::]"

Valid!

"first.last@[IPv6:::a3:a4:b1:ffff:11.22.33.44]"

Valid!

"first.last@[IPv6:a1:a2:a3:a4::11.22.33.44]"

Valid!

"first.last@[IPv6:a1:a2:a3:a4:b1::11.22.33.44]"

Valid!

```
"first.last@[IPv6:a1::11.22.33.44]"
```
Valid!
```
"first.last@[IPv6:a1:a2::11.22.33.44]"
```
Valid!

"first.last@[IPv6:0123:4567:89ab:cdef::11.22.33.44]"

Valid!

"first.last@[IPv6:0123:4567:89ab:CDEF::11.22.33.44]"

Valid!

```
"first.last@[IPv6:a1::b2:11.22.33.44]"
```
Valid!

"first.last@[IPv6:::a2:a3:a4:b1:b2:b3:b4]"

Valid!

"first.last@[IPv6:::a2:a3:a4:b1:ffff:11.22.33.44]"

Valid!

```
"test@test.com"
```
Valid!
```
"test@xn--example.com"
```
Valid!
```
"test@example.com"
```
Valid!
```
""
```
Invalid!
```
"mary"
```
Invalid!
```
"@"
```
Invalid!
```
"mary@"
```
Invalid!
```
"@io"
```
Invalid!
```
"@example.net"
```
Invalid!
```
".mary@example.net"
```
Invalid!
```
"jdoe.@example.net"
```
Invalid!
```
"pete..silly.test"
```
Invalid!
```
"sm_i-th.com"
```
Invalid!
```
"mary\\@jdoe@one.test"
```
Invalid!
```
"jdoe@.one.test"
```
Invalid!
```
"jdon@one.test."
```
Invalid!
```
"boss@nil..test"
```
Invalid!
```
"\"\"\"@example.net"
```
Invalid!
```
"\"\\\"@example.net"
```
Invalid!
```
"jdoe\"@machine.example"
```
Invalid!
```
"\"jdoe@machine.example"
```
Invalid!
```
"\"john\"public@example.com"
```
Invalid!
```
"john\"public\"@example.com"
```
Invalid!
```
"\"john\"\"public\"@example.com"
```
Invalid!
```
"\"mary\000\"@home.example"
```
Invalid!
```
"pete@a[255.255.255.255]"
```
Invalid!
```
"((comment)smith@home.example"
```
Invalid!
```
"smith(coment)doe@home.example"
```
Invalid!
```
"robert@henry.com\r"
```
Invalid!
```
"(smith@home.example"
```
Invalid!
```
"robert@[1.2.3.4"
```
Invalid!
```
"\"john\\\"@example.com"
```
Invalid!
```
"(comment\\)smith@home.example"
```
Invalid!
```
"smith@home.example(comment\\)"
```
Invalid!
```
"smith@home.example(comment\\"
```
Invalid!
```
"robert@[RFC5322-[domain-literal\\]"
```
Invalid!
```
"robert@[RFC5322-[domain-literal]"
```
Invalid!
```
"robert@[RFC5322-[domain-literal\\"
```
Invalid!
```
"marx@capitalism.ru\r"
```
Invalid!
```
"\rmarx@capitalism.ru"
```
Invalid!
```
"\"\rmarx\"@capitalism.ru"
```
Invalid!
```
"(\r)marx@capitalism.ru"
```
Invalid!
```
"marx@capitalism.ru(\r)"
```
Invalid!
```
"smith@communism.uk\n"
```
Invalid!
```
"\nsmith@communism.uk"
```
Invalid!
```
"\"\nsmith\"@communism.uk"
```
Invalid!
```
"(\n)smith@communism.uk"
```
Invalid!
```
"smith@communism.uk(\n)"
```
Invalid!
```
"first.last@sub.do,com"
```
Invalid!
```
"first\\@last@iana.org"
```
Invalid!
```
"first.last"
```
Invalid!
```
".first.last@iana.org"
```
Invalid!
```
"first.last.@iana.org"
```
Invalid!
```
"first..last@iana.org"
```
Invalid!
```
"\"first\"last\"@iana.org"
```
Invalid!
```
"\"\"\"@iana.org"
```
Invalid!
```
"\"\\\"@iana.org"
```
Invalid!
```
"\"\"@iana.org"
```
Invalid!
```
"first\\@last@iana.org"
```
Invalid!
```
"first.last@"
```
Invalid!
```
"first.last@[.12.34.56.78]"
```
Invalid!
```
"first.last@[12.34.56.789]"
```
Invalid!
```
"first.last@[::12.34.56.78]"
```
Invalid!
```
"first.last@[IPv5:::12.34.56.78]"
```
Invalid!

"first.last@[IPv6:1111:2222:3333:4444:5555:12.34.56.78]"

Invalid!

"first.last@[IPv6:1111:2222:3333:4444:5555:6666:7777:12.34.56.78]"

Invalid!

"first.last@[IPv6:1111:2222:3333:4444:5555:6666:7777]"

Invalid!

"first.last@[IPv6:1111:2222:3333:4444:5555:6666:7777:8888:9999]"

Invalid!

"first.last@[IPv6:1111:2222::3333::4444:5555:6666]"

Invalid!

"first.last@[IPv6:1111:2222:333x::4444:5555]"

Invalid!

"first.last@[IPv6:1111:2222:33333::4444:5555]"

Invalid!

```
"abc\\@def@iana.org"
```
Invalid!
```
"abc\\@iana.org"
```
Invalid!
```
"@iana.org"
```
Invalid!
```
"doug@"
```
Invalid!
```
"\"qu@iana.org"
```
Invalid!
```
"ote\"@iana.org"
```
Invalid!
```
".dot@iana.org"
```
Invalid!
```
"dot.@iana.org"
```
Invalid!
```
"two..dot@iana.org"
```
Invalid!
```
"\"Doug \"Ace\" L.\"@iana.org"
```
Invalid!
```
"Doug\\ \\\"Ace\\\"\\ L\\.@iana.org"
```
Invalid!
```
"hello world@iana.org"
```
Invalid!
```
"gatsby@f.sc.ot.t.f.i.tzg.era.l.d."
```
Invalid!
```
"test.iana.org"
```
Invalid!
```
"test.@iana.org"
```
Invalid!
```
"test..test@iana.org"
```
Invalid!
```
".test@iana.org"
```
Invalid!
```
"test@test@iana.org"
```
Invalid!
```
"test@@iana.org"
```
Invalid!
```
"-- test --@iana.org"
```
Invalid!
```
"[test]@iana.org"
```
Invalid!
```
"\"test\"test\"@iana.org"
```
Invalid!
```
"()[]\\;:,><@iana.org"
```
Invalid!
```
"test@."
```
Invalid!
```
"test@example."
```
Invalid!
```
"test@.org"
```
Invalid!
```
"test@[123.123.123.123"
```
Invalid!
```
"test@123.123.123.123]"
```
Invalid!
```
"NotAnEmail"
```
Invalid!
```
"NotAnEmail"
```
Invalid!
```
"\"test\"blah\"@iana.org"
```
Invalid!
```
".wooly@iana.org"
```
Invalid!
```
"wo..oly@iana.org"
```
Invalid!
```
"pootietang.@iana.org"
```
Invalid!
```
".@iana.org"
```
Invalid!
```
"Ima Fool@iana.org"
```
Invalid!
```
"phil.h\\@\\@ck@haacked.com"
```
Invalid!
```
"first\\last@iana.org"
```
Invalid!
```
"Abc\\@def@iana.org"
```
Invalid!
```
"Fred\\ Bloggs@iana.org"
```
Invalid!
```
"Joe.\\Blow@iana.org"
```
Invalid!

"first.last@[IPv6:1111:2222:3333:4444:5555:6666:12.34.567.89]"

Invalid!

```
"{^c\\@**Dog^}@cartoon.com"
```
Invalid!
```
"cal(foo(bar)@iamcal.com"
```
Invalid!
```
"cal(foo\\)@iamcal.com"
```
Invalid!
```
"cal(foo)bar)@iamcal.com"
```
Invalid!
```
"first(middle)last@iana.org"
```
Invalid!
```
"a(a(b(c)d(e(f))g)(h(i)j)@iana.org"
```
Invalid!
```
".@"
```
Invalid!
```
"@bar.com"
```
Invalid!
```
"@@bar.com"
```
Invalid!
```
"aaa.com"
```
Invalid!
```
"aaa@.com"
```
Invalid!
```
"aaa@.com"
```
Invalid!
```
"aaa@.123"
```
Invalid!
```
"aaa@[123.123.123.123]a"
```
Invalid!
```
"aaa@[123.123.123.333]"
```
Invalid!
```
"a@bar.com."
```
Invalid!
```
"-@..com"
```
Invalid!
```
"-@a..com"
```
Invalid!
```
"test@...........com"
```
Invalid!
```
"\"\000 \"@char.com"
```
Invalid!
```
"\000@char.com"
```
Invalid!
```
"first.last@[IPv6::]"
```
Invalid!
```
"first.last@[IPv6::::]"
```
Invalid!
```
"first.last@[IPv6::b4]"
```
Invalid!
```
"first.last@[IPv6::::b4]"
```
Invalid!
```
"first.last@[IPv6::b3:b4]"
```
Invalid!
```
"first.last@[IPv6::::b3:b4]"
```
Invalid!
```
"first.last@[IPv6:a1:::b4]"
```
Invalid!
```
"first.last@[IPv6:a1:]"
```
Invalid!
```
"first.last@[IPv6:a1:::]"
```
Invalid!
```
"first.last@[IPv6:a1:a2:]"
```
Invalid!
```
"first.last@[IPv6:a1:a2:::]"
```
Invalid!
```
"first.last@[IPv6::11.22.33.44]"
```
Invalid!
```
"first.last@[IPv6::::11.22.33.44]"
```
Invalid!
```
"first.last@[IPv6:a1:11.22.33.44]"
```
Invalid!
```
"first.last@[IPv6:a1:::11.22.33.44]"
```
Invalid!
```
"first.last@[IPv6:a1:a2:::11.22.33.44]"
```
Invalid!

"first.last@[IPv6:0123:4567:89ab:cdef::11.22.33.xx]"

Invalid!

"first.last@[IPv6:0123:4567:89ab:CDEFF::11.22.33.44]"

Invalid!

"first.last@[IPv6:a1::a4:b1::b4:11.22.33.44]"

Invalid!

```
"first.last@[IPv6:a1::11.22.33]"
```
Invalid!
```
"first.last@[IPv6:a1::11.22.33.44.55]"
```
Invalid!
```
"first.last@[IPv6:a1::b211.22.33.44]"
```
Invalid!
```
"first.last@[IPv6:a1::11.22.33]"
```
Invalid!
```
"first.last@[IPv6:a1::11.22.33.44.55]"
```
Invalid!
```
"first.last@[IPv6:a1::b211.22.33.44]"
```
Invalid!
```
"first.last@[IPv6:a1::b2::11.22.33.44]"
```
Invalid!
```
"first.last@[IPv6:a1::b3:]"
```
Invalid!
```
"first.last@[IPv6::a2::b4]"
```
Invalid!

"first.last@[IPv6:a1:a2:a3:a4:b1:b2:b3:]"

Invalid!

"first.last@[IPv6::a2:a3:a4:b1:b2:b3:b4]"

Invalid!

"first.last@[IPv6:a1:a2:a3:a4::b1:b2:b3:b4]"

Invalid!

"=?us-ascii?Q?Chri's_Smith?= =?us-ascii?Q?Henry?= <.@gmail.com,@hotmail.fr:henry.chris+porno@(Chris's host.)public.example> (je suis un connard en puissance)"

Invalid!