diff --git a/experiment.js b/experiment.js
index 69c75c0..83b6bec 100644
--- a/experiment.js
+++ b/experiment.js
@@ -7,25 +7,29 @@ var exp_logout = class extends ExtensionCommon.ExtensionAPI {
 			exp_logout: {
 				async exp_logout(identities) {
 					if( identities != null && identities.length > 0 ) {
-						var acctMgr = Components.classes["@mozilla.org/messenger/account-manager;1"].getService(Components.interfaces.nsIMsgAccountManager);  
-						var accounts = acctMgr.accounts;
-						for (var i = 0; i < accounts.length; i++) {  
-							var account = accounts[i];
-							if( account != null && account.identities != null && account.incomingServer != null ) {
-								for (var j = 0; j < account.identities.length; j++) {
-									var id = account.identities[j];
-									if( id != null ) {
-										for (var k = 0; k < identities.length; k++) {
-											var id2logout = identities[k].id;
-											if( id2logout == id.key ) {						
-												account.incomingServer.forgetPassword();
-												account.incomingServer.forgetSessionPassword();
-												account.incomingServer.closeCachedConnections();
-												var smtpService=Components.classes['@mozilla.org/messengercompose/smtp;1'].getService(Components.interfaces.nsISmtpService);
-												if( smtpService != null ) {
-													var smtpServer=smtpService.getServerByKey(id.smtpServerKey);
-													if( smtpServer != null ) {
-														smtpServer.forgetPassword();
+						var acctMgr = Components.classes["@mozilla.org/messenger/account-manager;1"].getService(Components.interfaces.nsIMsgAccountManager);
+						if( acctMgr != null ) {
+							var accounts = acctMgr.accounts;
+							if( accounts != null && accounts.length > 0 ) {
+								for (var i = 0; i < accounts.length; i++) {  
+									var account = accounts[i];
+									if( account != null && account.identities != null && account.incomingServer != null ) {
+										for (var j = 0; j < account.identities.length; j++) {
+											var id = account.identities[j];
+											if( id != null ) {
+												for (var k = 0; k < identities.length; k++) {
+													var id2logout = identities[k].id;
+													if( id2logout == id.key ) {						
+														account.incomingServer.forgetPassword();
+														account.incomingServer.forgetSessionPassword();
+														account.incomingServer.closeCachedConnections();
+														var smtpService=Components.classes['@mozilla.org/messengercompose/smtp;1'].getService(Components.interfaces.nsISmtpService);
+														if( smtpService != null ) {
+															var smtpServer=smtpService.getServerByKey(id.smtpServerKey);
+															if( smtpServer != null ) {
+																smtpServer.forgetPassword();
+															}
+														}
 													}
 												}
 											}
@@ -33,7 +37,7 @@ var exp_logout = class extends ExtensionCommon.ExtensionAPI {
 									}
 								}
 							}
-						}  
+						}
 					}
 				}
 			}