Browsers that support HTML5 email address validation include Safari 5 , Google Chrome 6 , Mozilla Firefox 4 and Opera 10 .Safari 5 and Google Chrome 6-8 will not accept invalid email address input but, unlike the other browsers, will not help the user correct the error.
That is, there is a LOCAL section followed by the "at" sign (@) followed by a DOMAIN section.
In the email address [email protected], the LOCAL section is "my.name" and the DOMAIN is "" The LOCAL section must be 1 to 64 characters long.
For that, the only real way is to send a message to confirm.
Note that e-mail addresses are more forgiving than you might first assume.
If you want to validate email addresses entered into your form but avoid complicated tinkering and scripts, HTML5 lets you rely on the browser — without effort, and without turning to Java Script.