As a software developer or tester of Web applications, you are required to know what is a valid email address and what is an invalid email address. According the Internet specifications, there are a number of valid email address formats. This page allows you to learn and test email address of all formats.
What is a valid email address?
According to the Internet specification RFC 2822, there are several formats of valid email addresses, like email@example.com, firstname.lastname@example.org, "John Gate"@host.net or "John Gate"@[10.0.3.19]. Many email address validators on the Web failed to recognize some of those valid email addresses.
Some examples of invalid email addresses are:
How to test email address format?
In order to help your programming or testing tasks, FYIcenter.com has designed this online testing page for you to validate any given email address using PHP regular expressions.
All you need to do is to enter an email address in the form below and click the Start button.
Other On-line Testing Pages by FYIcenter.com
FYIcenter.com has prepared some simple but very interesting on-line testing pages that are useful for your programming and testing tasks:
Each tutorial answers one commonly asked PHP programming question with a short, but precise and clear PHP script.