Index: t3lib/class.t3lib_tcemain.php
===================================================================
--- t3lib/class.t3lib_tcemain.php	(revision 5492)
+++ t3lib/class.t3lib_tcemain.php	(working copy)
@@ -2064,6 +2064,9 @@
 				case 'alphanum_x':
 					$value = preg_replace('/[^a-zA-Z0-9_-]/','',$value);
 				break;
+				case 'email':
+					$set = t3lib_div::validEmail($value);
+				break;
 				default:
 					if (substr($func, 0, 3) == 'tx_')	{
 						$evalObj = t3lib_div::getUserObj($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tce']['formevals'][$func].':&'.$func);
Index: t3lib/jsfunc.evalfield.js
===================================================================
--- t3lib/jsfunc.evalfield.js	(revision 5492)
+++ t3lib/jsfunc.evalfield.js	(working copy)
@@ -30,6 +30,7 @@
 	this.parseInt = evalFunc_parseInt;
 	this.getNumChars = evalFunc_getNumChars;
 	this.parseDouble = evalFunc_parseDouble;
+	this.parseEmail = evalFunc_email;
 	this.noSpace = evalFunc_noSpace;
 	this.getSecs = evalFunc_getSecs;
 	this.getYear = evalFunc_getYear;
@@ -241,6 +242,15 @@
 		}
 	}
 }
+function evalFunc_email(value) {
+	var apos = value.indexOf("@");
+	var dotpos = value.lastIndexOf(".");
+	if (apos < 1 || dotpos - apos < 2) {
+		return '';
+	} else {
+		return value;
+	}
+}
 function evalFunc_input(type,inVal)	{
 	if (type=="md5") {
 		return MD5(inVal);
@@ -254,6 +264,9 @@
 	if (type=="double2") {
 		return this.parseDouble(inVal);
 	}
+	if (type=="email") {
+		return this.parseEmail(inVal);
+	}
 
 	var today = new Date();
 	var add=0;