diff --git a/src/mail_templates/app_down.ejs b/src/mail_templates/app_down.ejs
deleted file mode 100644
index 30957368d..000000000
--- a/src/mail_templates/app_down.ejs
+++ /dev/null
@@ -1,21 +0,0 @@
-<%if (format === 'text') { %>
-
-Dear Cloudron Admin,
-
-The application '<%= title %>' installed at <%= appFqdn %> is not responding.
-
-This is most likely a problem in the application.
-
-To resolve this, you can try the following:
-* Restart the app by opening the app's web terminal - https://docs.cloudron.io/apps/#web-terminal
-* Restore the app to the latest backup - https://docs.cloudron.io/backups/#restoring-an-app
-* Contact us via <%= supportEmail %> or https://forum.cloudron.io
-
-
-Powered by https://cloudron.io
-
-Sent at: <%= new Date().toUTCString() %>
-
-<% } else { %>
-
-<% } %>
diff --git a/src/mail_templates/app_up.ejs b/src/mail_templates/app_up.ejs
deleted file mode 100644
index 9d842ab58..000000000
--- a/src/mail_templates/app_up.ejs
+++ /dev/null
@@ -1,14 +0,0 @@
-<%if (format === 'text') { %>
-
-Dear Cloudron Admin,
-
-The application '<%= title %>' installed at <%= appFqdn %> is back online
-and responding to health checks.
-
-Powered by https://cloudron.io
-
-Sent at: <%= new Date().toUTCString() %>
-
-<% } else { %>
-
-<% } %>
diff --git a/src/mail_templates/oom_event.ejs b/src/mail_templates/oom_event.ejs
deleted file mode 100644
index 74575edb2..000000000
--- a/src/mail_templates/oom_event.ejs
+++ /dev/null
@@ -1,27 +0,0 @@
-<%if (format === 'text') { %>
-
-Dear <%= cloudronName %> Admin,
-
-<%if (app) { %>
-The application at <%= app.fqdn %> ran out of memory. The application has been restarted automatically. If you see this notification often,
-consider increasing the memory limit - <%= webadminUrl %>/#/app/<%= app.id %>/resources .
-<% } else { %>
-The addon <%= addon.name %> service ran out of memory. The service has been restarted automatically. If you see this notification often,
-consider increasing the memory limit - <%= webadminUrl %>/#/services .
-<% } %>
-
-Out of memory event:
-
--------------------------------------
-
-<%- event %>
-
--------------------------------------
-
-Powered by https://cloudron.io
-
-Sent at: <%= new Date().toUTCString() %>
-
-<% } else { %>
-
-<% } %>
diff --git a/src/mailer.js b/src/mailer.js
index 622013cfe..c02a8c742 100644
--- a/src/mailer.js
+++ b/src/mailer.js
@@ -7,10 +7,7 @@ exports = module.exports = {
 
     sendInvite,
 
-    appUp,
-    appDied,
     appUpdated,
-    oomEvent,
 
     backupFailed,
 
@@ -177,46 +174,6 @@ function passwordReset(user) {
     });
 }
 
-function appUp(mailTo, app) {
-    assert.strictEqual(typeof mailTo, 'string');
-    assert.strictEqual(typeof app, 'object');
-
-    debug('Sending mail for app %s @ %s up', app.id, app.fqdn);
-
-    getMailConfig(function (error, mailConfig) {
-        if (error) return debug('Error getting mail details:', error);
-
-        var mailOptions = {
-            from: mailConfig.notificationFrom,
-            to: mailTo,
-            subject: `[${mailConfig.cloudronName}] App ${app.fqdn} is back online`,
-            text: render('app_up.ejs', { title: app.manifest.title, appFqdn: app.fqdn, format: 'text' })
-        };
-
-        sendMail(mailOptions);
-    });
-}
-
-function appDied(mailTo, app) {
-    assert.strictEqual(typeof mailTo, 'string');
-    assert.strictEqual(typeof app, 'object');
-
-    debug('Sending mail for app %s @ %s died', app.id, app.fqdn);
-
-    getMailConfig(function (error, mailConfig) {
-        if (error) return debug('Error getting mail details:', error);
-
-        var mailOptions = {
-            from: mailConfig.notificationFrom,
-            to: mailTo,
-            subject: `[${mailConfig.cloudronName}] App ${app.fqdn} is down`,
-            text: render('app_down.ejs', { title: app.manifest.title, appFqdn: app.fqdn, supportEmail: mailConfig.supportEmail, format: 'text' })
-        };
-
-        sendMail(mailOptions);
-    });
-}
-
 function appUpdated(mailTo, app, callback) {
     assert.strictEqual(typeof mailTo, 'string');
     assert.strictEqual(typeof app, 'object');
@@ -385,36 +342,6 @@ function boxUpdateError(mailTo, message) {
     });
 }
 
-function oomEvent(mailTo, app, addon, containerId, event) {
-    assert.strictEqual(typeof mailTo, 'string');
-    assert.strictEqual(typeof app, 'object');
-    assert.strictEqual(typeof addon, 'object');
-    assert.strictEqual(typeof containerId, 'string');
-    assert.strictEqual(typeof event, 'object');
-
-    getMailConfig(function (error, mailConfig) {
-        if (error) return debug('Error getting mail details:', error);
-
-        const templateData = {
-            webadminUrl: settings.adminOrigin(),
-            cloudronName: mailConfig.cloudronName,
-            app,
-            addon,
-            event: JSON.stringify(event),
-            format: 'text'
-        };
-
-        var mailOptions = {
-            from: mailConfig.notificationFrom,
-            to: mailTo,
-            subject: `[${mailConfig.cloudronName}] ${app ? app.fqdn : addon.name} was restarted (OOM)`,
-            text: render('oom_event.ejs', templateData)
-        };
-
-        sendMail(mailOptions);
-    });
-}
-
 function sendTestMail(domain, email, callback) {
     assert.strictEqual(typeof domain, 'string');
     assert.strictEqual(typeof email, 'string');
diff --git a/src/notifications.js b/src/notifications.js
index 59348468f..e6687905a 100644
--- a/src/notifications.js
+++ b/src/notifications.js
@@ -166,8 +166,6 @@ function oomEvent(eventId, app, addon, containerId, event, callback) {
     }
 
     forEachAdmin({ skip: [] }, function (admin, done) {
-        mailer.oomEvent(admin.email, app, addon, containerId, event);
-
         add(admin.id, eventId, title, message, done);
     }, callback);
 }
@@ -178,7 +176,6 @@ function appUp(eventId, app, callback) {
     assert.strictEqual(typeof callback, 'function');
 
     forEachAdmin({ skip: [] }, function (admin, done) {
-        mailer.appUp(admin.email, app);
         add(admin.id, eventId, `App ${app.fqdn} is back online`, `The application installed at ${app.fqdn} is back online.`, done);
     }, callback);
 }
@@ -189,7 +186,6 @@ function appDied(eventId, app, callback) {
     assert.strictEqual(typeof callback, 'function');
 
     forEachAdmin({ skip: [] }, function (admin, callback) {
-        mailer.appDied(admin.email, app);
         add(admin.id, eventId, `App ${app.fqdn} is down`, `The application installed at ${app.fqdn} is not responding.`, callback);
     }, callback);
 }