CFLib.org – Common Function Library Project

Description:
Tests passed value to see if it is a valid e-mail address (supports subdomain nesting and new top-level domains).

Return Values:
Returns a boolean.

Example:

<cfoutput>
#YesNoFormat(IsEmail("jguillaume@stoneage.com"))#<br>
#YesNoFormat(IsEmail("jguillaume@stoneage.com.info"))#<br>
#YesNoFormat(IsEmail("jguillaume@subdomain.stoneage.museum"))#<br>
#YesNoFormat(IsEmail("jguillaume@stoneage.invalidTLD"))#
</cfoutput>

Parameters:

Full UDF Source:

/**
 * Tests passed value to see if it is a valid e-mail address (supports subdomain nesting and new top-level domains).
 * Update by David Kearns to support '
 * SBrown@xacting.com pointing out regex still wasn't accepting ' correctly.
 * Should support + gmail style addresses now.
 * More TLDs
 * Version 4 by P Farrel, supports limits on u/h
 * Added mobi
 * v6 more tlds
 * 
 * @param str      The string to check. (Required)
 * @return Returns a boolean. 
 * @author Jeff Guillaume (jeff@kazoomis.com) 
 * @version 7, May 8, 2009 
 */
function isEmail(str) {
    return (REFindNoCase("^['_a-z0-9-\+]+(\.['_a-z0-9-\+]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*\.(([a-z]{2,3})|(aero|asia|biz|cat|coop|info|museum|name|jobs|post|pro|tel|travel|mobi))$",
arguments.str) AND len(listGetAt(arguments.str, 1, "@")) LTE 64 AND
len(listGetAt(arguments.str, 2, "@")) LTE 255) IS 1;
}