Index: maintenance/language/messages.inc
===================================================================
--- maintenance/language/messages.inc	(revision 106166)
+++ maintenance/language/messages.inc	(working copy)
@@ -422,6 +422,7 @@
 		'yourpassword',
 		'yourpasswordagain',
 		'remembermypassword',
+                'byemail-explanation',
 		'securelogin-stick-https',
 		'yourdomainname',
 		'externaldberror',
Index: skins/common/shared.css
===================================================================
--- skins/common/shared.css	(revision 106166)
+++ skins/common/shared.css	(working copy)
@@ -236,7 +236,9 @@
 td.mw-submit {
 	white-space: nowrap;
 }
-
+.byemailtip{ 
+    white-space: pre-line; 
+}
 table.mw-htmlform-nolabel td.mw-label {
 	width: 0 !important;
 }
Index: includes/templates/Userlogin.php
===================================================================
--- includes/templates/Userlogin.php	(revision 106166)
+++ includes/templates/Userlogin.php	(working copy)
@@ -370,6 +370,9 @@
 					tabindex="<?php echo $tabIndex++; ?>"
 					value="<?php $this->msg('createaccountmail') ?>" />
 				<?php } ?>
+				<span class="prefsectiontip byemailtip" >
+					<?php $this->msgWiki('byemail-explanation'); ?>
+				</span>
 			</td>
 		</tr>
 	</table>
Index: languages/messages/MessagesQqq.php
===================================================================
--- languages/messages/MessagesQqq.php	(revision 106166)
+++ languages/messages/MessagesQqq.php	(working copy)
@@ -677,7 +677,8 @@
 # Login and logout pages
 'logouttext'                 => 'Log out message',
 'welcomecreation'            => 'The welcome message users see after registering a user account. $1 is the username of the new user.',
-'yourname'                   => "In user preferences
+'yourname'                   => "In user preferences,
+'byemail-explanation',       => 'Explains that clicking By E-mail sends a random password to the account that can be changed on login. In [[Special:UserLogin]]'
 
 <nowiki>{{</nowiki>[[Gender|GENDER]]<nowiki>}}</nowiki> is '''NOT''' supported.
 
Index: languages/messages/MessagesEn.php
===================================================================
--- languages/messages/MessagesEn.php	(revision 106166)
+++ languages/messages/MessagesEn.php	(working copy)
@@ -1044,6 +1044,7 @@
 'yourpassword'               => 'Password:',
 'yourpasswordagain'          => 'Retype password:',
 'remembermypassword'         => 'Remember my login on this browser (for a maximum of $1 {{PLURAL:$1|day|days}})',
+'byemail-explanation'        => 'Clicking By E-mail will send an an auto-generated password to the provided email that can be reset after that new user logs in',
 'securelogin-stick-https'    => 'Stay connected to HTTPS after login',
 'yourdomainname'             => 'Your domain:',
 'externaldberror'            => 'There was either an authentication database error or you are not allowed to update your external account.',