diff --git a/api/src/Storage/Customfields.php b/api/src/Storage/Customfields.php
index 9c6cc69f12..93d2ab971d 100755
--- a/api/src/Storage/Customfields.php
+++ b/api/src/Storage/Customfields.php
@@ -501,6 +501,28 @@ class Customfields implements \IteratorAggregate
 		return $types;
 	}
 
+	/**
+	 * Return names of custom fields containing url-email
+	 *
+	 * @param string $app
+	 * @return array of url-email fields
+	 */
+	public static function get_email_cfs($app)
+	{
+		$fields = array();
+		if (($cfs = self::get($app, true)))
+		{
+			foreach($cfs as $name => $data)
+			{
+				if ($data['type'] == 'url-email')
+				{
+					$fields[] = $name;
+				}
+			}
+		}
+		return $fields;
+	}
+
 	/**
 	 * Initialise our db
 	 *
diff --git a/mail/inc/class.mail_compose.inc.php b/mail/inc/class.mail_compose.inc.php
index b59da9c622..baea345bc4 100644
--- a/mail/inc/class.mail_compose.inc.php
+++ b/mail/inc/class.mail_compose.inc.php
@@ -3583,6 +3583,7 @@ class mail_compose
 			$filter['cols_to_search'] = array('n_prefix','n_given','n_family','org_name','email','email_home');
 			$cols = array('n_fn','n_prefix','n_given','n_family','org_name','email','email_home');
 			$contacts = $contacts_obj->search($search_str, $cols, 'n_fn', '', '%', false, 'OR', array(0,100), $filter);
+			$cfs_type_email = Api\Storage\Customfields::get_email_cfs('addressbook');
 			// additionally search the accounts, if the contact storage is not the account storage
 			if ($showAccounts && $contacts_obj->so_accounts)
 			{
@@ -3607,7 +3608,8 @@ class mail_compose
 
 		if(is_array($contacts)) {
 			foreach($contacts as $contact) {
-				foreach(array($contact['email'],$contact['email_home']) as $email) {
+				$cf_emails = (array)array_values(array_values($contacts_obj->read_customfields($contact['id'], $cfs_type_email))[0]);
+				foreach(array_merge(array($contact['email'],$contact['email_home']), $cf_emails) as $email) {
 					// avoid wrong addresses, if an rfc822 encoded address is in addressbook
 					//$email = preg_replace("/(^.*<)([a-zA-Z0-9_\-]+@[a-zA-Z0-9_\-\.]+)(.*)/",'$2',$email);
 					$rfcAddr = Mail::parseAddressList($email);