diff --git a/test/cloudron-backup-test.js b/test/cloudron-backup-test.js
index f08e207..5838bc3 100644
--- a/test/cloudron-backup-test.js
+++ b/test/cloudron-backup-test.js
@@ -10,6 +10,7 @@ var AppStore = require('../appstore.js'),
     Cloudron = require('../cloudron.js'),
     common = require('../common.js'),
     dnsSync = require('dns-sync'),
+    ImapProbe = require('../imap-probe.js'),
     mailer = require('../mailer.js'),
     sleep = require('sleep').sleep;
 
@@ -25,7 +26,7 @@ describe('Cloudron backup testing', function () {
 
     var owner = common.getOwner();
     var admin = common.getAdmin();
-    var cloudron, appId, box, backupInfo;
+    var cloudron, appId, box, backupInfo, imap;
 
     it('can login to the store', function () {
         var accessToken = appStore.getAccessToken(owner);
@@ -44,6 +45,16 @@ describe('Cloudron backup testing', function () {
         });
         box = appStore.waitForCloudron(box.id);
         cloudron = new Cloudron(box);
+
+        imap = new ImapProbe({
+            user: common.getOwner().username,
+            password: common.getOwner().password,
+            host: cloudron.adminFqdn(),
+            port: 993, // imap port 
+            tls: true,
+            tlsOptions: { rejectUnauthorized: false },
+            readOnly: true
+        });
     });
 
     it('can activate the box', function () {
@@ -63,6 +74,14 @@ describe('Cloudron backup testing', function () {
         cloudron.saveSieveScript(owner, done);
     });
 
+    it('can receive mail', function (done) {
+        imap.probe({
+            subject: new RegExp('^Hi from e2e test$'),
+            to: new RegExp(owner.username + '@' + box.domain),
+            body: /The release depends on you/
+        }, done);
+    });
+
     var location = 'test' + (Math.random() * 10000).toFixed();
     it('can install app', function () {
         var manifest = appStore.getManifest(common.TESTAPP_ID, common.TESTAPP_VERSION);
@@ -102,6 +121,18 @@ describe('Cloudron backup testing', function () {
         cloudron.setCredentials(owner.password, token);
     });
 
+    it('retains old mail', function (done) {
+        imap.probe({
+            subject: new RegExp('^Hi from e2e test$'),
+            to: new RegExp(owner.username + '@' + box.domain),
+            body: /The release depends on you/
+        }, done);
+    });
+
+    it('can check sieve script', function (done) {
+        cloudron.checkSieveScript(owner, done);
+    });
+
     it('wait for app', function () {
         cloudron.waitForApp(appId);
     });
@@ -114,14 +145,6 @@ describe('Cloudron backup testing', function () {
         cloudron.uninstallApp(appId);
     });
 
-    it('can check mail', function (done) {
-        cloudron.checkMail(owner, done);
-    });
-
-    it('can check sieve script', function (done) {
-        cloudron.checkSieveScript(owner, done);
-    });
-
     it('can delete the cloudron', function () {
         appStore.deleteCloudron(box);
     });