diff --git a/data/web/inc/functions.inc.php b/data/web/inc/functions.inc.php
index f0677d53..8b5d6ad4 100644
--- a/data/web/inc/functions.inc.php
+++ b/data/web/inc/functions.inc.php
@@ -4609,6 +4609,46 @@ function mailbox_delete_mailbox($postarray) {
 		'msg' => sprintf($lang['success']['mailbox_removed'], htmlspecialchars($username))
 	);
 }
+function mailbox_reset_eas($username) {
+	global $lang;
+	global $pdo;
+
+  (isset($postarray['username'])) ? $username = $postarray['username'] : $username = $_SESSION['mailcow_cc_username'];
+
+	if (!filter_var($username, FILTER_VALIDATE_EMAIL)) {
+		$_SESSION['return'] = array(
+			'type' => 'danger',
+			'msg' => sprintf($lang['danger']['access_denied'])
+		);
+		return false;
+	}
+
+	if (!hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $username)) {
+		$_SESSION['return'] = array(
+			'type' => 'danger',
+			'msg' => sprintf($lang['danger']['access_denied'])
+		);
+		return false;
+	}
+
+	try {
+    $stmt = $pdo->prepare("DELETE FROM `sogo_cache_folder` WHERE `c_uid` = :username");
+    $stmt->execute(array(
+      ':username' => $username
+    ));
+	}
+	catch (PDOException $e) {
+		$_SESSION['return'] = array(
+			'type' => 'danger',
+			'msg' => 'MySQL: '.$e
+		);
+		return false;
+	}
+	$_SESSION['return'] = array(
+		'type' => 'success',
+		'msg' => sprintf($lang['success']['eas_reset'], htmlspecialchars($username))
+	);
+}
 function mailbox_delete_resource($postarray) {
 	global $lang;
 	global $pdo;
@@ -4630,10 +4670,38 @@ function mailbox_delete_resource($postarray) {
 	}
 
 	try {
-		$stmt = $pdo->prepare("DELETE FROM `mailbox` WHERE `username` = :name");
+		$stmt = $pdo->prepare("DELETE FROM `mailbox` WHERE `username` = :username");
 		$stmt->execute(array(
-			':name' => $name
+			':username' => $name
 		));
+    $stmt = $pdo->prepare("DELETE FROM `sogo_user_profile` WHERE `c_uid` = :username");
+    $stmt->execute(array(
+      ':username' => $name
+    ));
+    $stmt = $pdo->prepare("DELETE FROM `sogo_cache_folder` WHERE `c_uid` = :username");
+    $stmt->execute(array(
+      ':username' => $name
+    ));
+    $stmt = $pdo->prepare("DELETE FROM `sogo_acl` WHERE `c_object` LIKE '%/" . $name . "/%' OR `c_uid` = :username");
+    $stmt->execute(array(
+      ':username' => $name
+    ));
+    $stmt = $pdo->prepare("DELETE FROM `sogo_store` WHERE `c_folder_id` IN (SELECT `c_folder_id` FROM `sogo_folder_info` WHERE `c_path2` = :username)");
+    $stmt->execute(array(
+      ':username' => $name
+    ));
+    $stmt = $pdo->prepare("DELETE FROM `sogo_quick_contact` WHERE `c_folder_id` IN (SELECT `c_folder_id` FROM `sogo_folder_info` WHERE `c_path2` = :username)");
+    $stmt->execute(array(
+      ':username' => $name
+    ));
+    $stmt = $pdo->prepare("DELETE FROM `sogo_quick_appointment` WHERE `c_folder_id` IN (SELECT `c_folder_id` FROM `sogo_folder_info` WHERE `c_path2` = :username)");
+    $stmt->execute(array(
+      ':username' => $name
+    ));
+    $stmt = $pdo->prepare("DELETE FROM `sogo_folder_info` WHERE `c_path2` = :username");
+    $stmt->execute(array(
+      ':username' => $name
+    ));
 	}
 	catch (PDOException $e) {
 		$_SESSION['return'] = array(
diff --git a/data/web/inc/triggers.inc.php b/data/web/inc/triggers.inc.php
index 3e68c87f..2dbe321a 100644
--- a/data/web/inc/triggers.inc.php
+++ b/data/web/inc/triggers.inc.php
@@ -77,6 +77,9 @@ if (isset($_SESSION['mailcow_cc_role']) && $_SESSION['mailcow_cc_role'] == "user
 	if (isset($_POST["edit_user_account"])) {
 		edit_user_account($_POST);
 	}
+	if (isset($_POST["mailbox_reset_eas"])) {
+		mailbox_reset_eas($_POST);
+	}
 	if (isset($_POST["edit_spam_score"])) {
 		edit_spam_score($_POST);
 	}
diff --git a/data/web/lang/lang.de.php b/data/web/lang/lang.de.php
index 6b6f5ab8..3575fb74 100644
--- a/data/web/lang/lang.de.php
+++ b/data/web/lang/lang.de.php
@@ -78,6 +78,7 @@ $lang['success']['alias_removed'] = 'Alias-Adresse %s wurde entfernt';
 $lang['success']['alias_domain_removed'] = 'Alias-Domain %s wurde entfernt';
 $lang['success']['domain_admin_removed'] = 'Domain-Administrator %s wurde entfernt';
 $lang['success']['mailbox_removed'] = 'Mailbox %s wurde entfernt';
+$lang['success']['eas_reset'] = "ActiveSync Gerät des Benutzers %s wurden zurückgesetzt";
 $lang['success']['resource_removed'] = 'Ressource %s wurde entfernt';
 $lang['danger']['max_quota_in_use'] = 'Mailbox Speicherplatzlimit muss größer oder gleich %d MiB sein';
 $lang['danger']['domain_quota_m_in_use'] = 'Domain Speicherplatzlimit muss größer oder gleich %d MiB sein';
@@ -156,6 +157,9 @@ $lang['user']['tag_in_subject'] = 'In Betreff';
 $lang['user']['tag_help_explain'] = 'Als Unterordner: Es wird ein Ordner mit dem Namen des Tags unterhalb der Inbox erstellt ("INBOX/Facebook").<br />
 In Betreff: Der Name des Tags wird dem Betreff angefügt, etwa "[Facebook] Meine Neuigkeiten".';
 $lang['user']['tag_help_example'] = 'Beispiel für eine getaggte E-Mail-Adresse: ich<b>+Facebook</b>@example.org';
+$lang['user']['eas_reset'] = 'ActiveSync Geräte-Cache zurücksetzen';
+$lang['user']['eas_reset_now'] = 'Jetzt zurücksetzen';
+$lang['user']['eas_reset_help'] = 'In vielen Fällen kann ein ActiveSync Profil durch das Zurücksetzen des Caches repariert werden.<br /><b>Vorsicht:</b> Alle Elemente werden erneut heruntergeladen!';
 
 $lang['user']['encryption'] = 'Verschlüsselung';
 $lang['user']['username'] = 'Benutzername';
diff --git a/data/web/lang/lang.en.php b/data/web/lang/lang.en.php
index ed60a7f6..9f4efad4 100644
--- a/data/web/lang/lang.en.php
+++ b/data/web/lang/lang.en.php
@@ -80,6 +80,7 @@ $lang['success']['alias_removed'] = "Alias-Adresse %s has been removed";
 $lang['success']['alias_domain_removed'] = "Alias domain %s has been removed";
 $lang['success']['domain_admin_removed'] = "Domain administrator %s has been removed";
 $lang['success']['mailbox_removed'] = "Mailbox %s has been removed";
+$lang['success']['eas_reset'] = "ActiveSync devices for user %s were reset";
 $lang['success']['resource_removed'] = "Resource %s has been removed";
 $lang['danger']['max_quota_in_use'] = "Mailbox quota must be greater or equal to %d MiB";
 $lang['danger']['domain_quota_m_in_use'] = "Domain quota must be greater or equal to %s MiB";
@@ -158,6 +159,9 @@ $lang['user']['tag_in_subject'] = 'In subject';
 $lang['user']['tag_help_explain'] = 'In subfolder: a new subfolder named after the tag will be created below INBOX ("INBOX/Facebook").<br />
 In subject: the tags name will be prepended to the mails subject, example: "[Facebook] Meine Neuigkeiten".';
 $lang['user']['tag_help_example'] = 'Example for a tagged email address: ich<b>+Facebook</b>@example.org';
+$lang['user']['eas_reset'] = 'Reset ActiveSync device cache';
+$lang['user']['eas_reset_now'] = 'Reset now';
+$lang['user']['eas_reset_help'] = 'In many cases a device cache reset will help to recover a broken ActiveSync profile.<br /><b>Attention:</b> All elements will be redownloaded!';
 
 $lang['user']['encryption'] = 'Encyrption';
 $lang['user']['username'] = 'Username';
diff --git a/data/web/user.php b/data/web/user.php
index d158439d..9c5b93ec 100644
--- a/data/web/user.php
+++ b/data/web/user.php
@@ -112,6 +112,16 @@ elseif (isset($_SESSION['mailcow_cc_role']) && $_SESSION['mailcow_cc_role'] == '
     </div>
   </div>
   </form>
+  <?php // Rest EAS devices ?>
+  <form class="form-horizontal" role="form" method="post">
+  <div class="row">
+    <div class="col-md-3 col-xs-5 text-right"><?=$lang['user']['eas_reset'];?>:</div>
+    <div class="col-md-9 col-xs-7">
+    <button type="submit" name="mailbox_reset_eas" id="mailbox_reset_eas" value="1" class="btn btn-xs btn-default"><?=$lang['user']['eas_reset_now'];?></button>
+    <p class="help-block"><?=$lang['user']['eas_reset_help'];?></p>
+    </div>
+  </div>
+  </form>
 </div>
 </div>