diff --git a/client/client/src/billing-data/billing-data.html b/client/client/src/billing-data/billing-data.html
index a001ba49e0..74180d36e9 100644
--- a/client/client/src/billing-data/billing-data.html
+++ b/client/client/src/billing-data/billing-data.html
@@ -5,7 +5,7 @@
     form="form" 
     save="put">
 </vn-watcher>
-<form name="form" ng-submit="watcher.submit()" pad-medium>
+<form name="form" ng-submit="bill.checkChanges() && watcher.submit()" pad-medium>
     <vn-card margin-small-bottom>
         <vn-vertical pad-large>
             <vn-title>Información de facturación</vn-title>
@@ -40,4 +40,18 @@
     <vn-button-bar>
         <vn-submit label="Guardar"></vn-submit>
     </vn-button-bar>
-</form>
\ No newline at end of file
+</form>
+<vn-dialog
+    vn-id="send-mail"
+    on-response="bill.returnDialog(response)">
+    <tpl-body>
+       <vn-vertical>
+           <vn-one text-center translate>Changed terms</vn-one>
+           <vn-one text-center translate>Notify customer?</vn-one>
+       </vn-vertical>
+    </tpl-body>
+    <tpl-buttons>
+        <button response="CANCEL" translate>No</button>
+        <button response="ACCEPT" translate>Yes, notify</button>
+    </tpl-buttons>
+</vn-dialog>
\ No newline at end of file
diff --git a/client/client/src/billing-data/billing-data.js b/client/client/src/billing-data/billing-data.js
index 7c70b46afd..c5b99cf092 100644
--- a/client/client/src/billing-data/billing-data.js
+++ b/client/client/src/billing-data/billing-data.js
@@ -1,8 +1,56 @@
 import {module} from '../module';
 
 export const NAME = 'vnClientBillingData';
+
+class billingData {
+    constructor($scope, $http, $timeout) {
+        this.$ = $scope;
+        this.http = $http;
+        this.timeout = $timeout;
+        this.payId = null;
+        this.dueDay = null;
+        this.copyData();
+    }
+
+    $onChanges(changes) {
+        this.copyData();
+    }
+
+    copyData() {
+        if (this.client) {
+            this.payId = this.client.payMethod ? this.client.payMethod.id : null;
+            this.dueDay = this.client.dueDay ? this.client.dueDay : null;
+        }
+    }
+
+    checkChanges() {
+        let payId = this.client.payMethodFk || null;
+        let dueDay = this.client.dueDay || null;
+        let dialog = this.$.sendMail;
+
+        if (dialog && (this.payId !== payId || this.dueDay !== dueDay)) {
+            dialog.show();
+            return false;
+        }
+
+        return true;
+    }
+    returnDialog(response) {
+        if (response === 'ACCEPT') {
+            this.sendMail();
+        }
+        this.timeout(() => this.$.watcher.submit());
+    }
+
+    sendMail() {
+        this.http.post(`/mailer/manuscript/paymentUpdate`, {user: this.client.id});
+    }
+}
+billingData.$inject = ['$scope', '$http', '$timeout'];
+
 export const COMPONENT = {
     template: require('./billing-data.html'),
+    controller: billingData,
     controllerAs: 'bill',
     bindings: {
         client: '<'
diff --git a/client/client/src/billing-data/locale/es.json b/client/client/src/billing-data/locale/es.json
new file mode 100644
index 0000000000..5c4e720d71
--- /dev/null
+++ b/client/client/src/billing-data/locale/es.json
@@ -0,0 +1,6 @@
+{
+    "Changed terms": "Has modificado las condiciones de pago",
+    "Notify customer?" : "¿Deseas notificar al cliente con dichos cambios?",
+    "No": "No",
+    "Yes, notify": "Sí, notificar"
+}
\ No newline at end of file
diff --git a/client/salix/src/styles/misc.scss b/client/salix/src/styles/misc.scss
index 6b8523aab5..1146d9c0fd 100644
--- a/client/salix/src/styles/misc.scss
+++ b/client/salix/src/styles/misc.scss
@@ -26,4 +26,7 @@ html [fixed-bottom-right] {
 vn-button-bar {
     display: block;
     margin-top: $margin-small;
+}
+html [text-center], .text-center {
+    text-align: center;
 }
\ No newline at end of file
diff --git a/services/mailer/Application/router.js b/services/mailer/Application/router.js
index 6bc5e60bfa..c18f908a98 100644
--- a/services/mailer/Application/router.js
+++ b/services/mailer/Application/router.js
@@ -4,7 +4,7 @@ var settings = require('./settings.js');
 
 // Página por defecto
 router.get('/', function(request, response) {
-    response.send(Settings.name + ' v' + settings.version);
+    response.send(settings.name + ' v' + settings.version);
 });
 
 // Rutas de los escritos.