diff --git a/addons/web/static/src/js/framework/utils.js b/addons/web/static/src/js/framework/utils.js
index 3e9bd87f8de..cfb9d16af22 100644
--- a/addons/web/static/src/js/framework/utils.js
+++ b/addons/web/static/src/js/framework/utils.js
@@ -418,6 +418,16 @@ function swap(array, elem1, elem2) {
     array[i1] = elem2;
 }
 
+function is_email(value, allow_mailto) {
+    // http://stackoverflow.com/questions/46155/validate-email-address-in-javascript
+    var re;
+    if (allow_mailto) {
+        re = /^(mailto:)?(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i;
+    } else {
+        re = /^(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i;
+    }
+    return re.test(value);
+}
 
 return {
     divmod: divmod,
@@ -445,6 +455,7 @@ return {
     xor: xor,
     DropMisordered: DropMisordered,
     swap: swap,
+    is_email: is_email,
 };
 
 });
diff --git a/addons/web_editor/static/src/js/widgets.js b/addons/web_editor/static/src/js/widgets.js
index bf72f25bc74..f23e196997a 100644
--- a/addons/web_editor/static/src/js/widgets.js
+++ b/addons/web_editor/static/src/js/widgets.js
@@ -4,6 +4,7 @@ odoo.define('web_editor.widget', function (require) {
 var core = require('web.core');
 var ajax = require('web.ajax');
 var Widget = require('web.Widget');
+var utils = require('web.utils');
 var base = require('web_editor.base');
 var rte = require('web_editor.rte');
 
@@ -1050,6 +1051,7 @@ var LinkDialog = Dialog.extend({
         if (!$e.length) {
             $e = this.$('input.url-source:first');
         }
+        $e.closest('.form-group').removeClass('has-error');
         var val = $e.val();
         var label = this.$('#link-text').val() || val;
 
@@ -1070,8 +1072,7 @@ var LinkDialog = Dialog.extend({
         var size = this.$("input[name='link-style-size']:checked").val() || '';
         var classes = (this.data.className || "") + (style && style.length ? " btn " : "") + style + " " + size;
         var isNewWindow = this.$('input.window-new').prop('checked');
-
-        if ($e.hasClass('email-address') && $e.val().indexOf("@") !== -1) {
+        if ($e.hasClass('email-address') && (_.str.startsWith(val, 'mailto:') || (val.indexOf("@") !== -1 && !_.str.startsWith(val, 'http') && !_.str.startsWith(val, 'www')))) {
             self.get_data_buy_mail(def, $e, isNewWindow, label, classes, test);
         } else {
             self.get_data_buy_url(def, $e, isNewWindow, label, classes, test);
@@ -1080,7 +1081,13 @@ var LinkDialog = Dialog.extend({
     },
     get_data_buy_mail: function (def, $e, isNewWindow, label, classes, test) {
         var val = $e.val();
-        def.resolve(val.indexOf("mailto:") === 0 ? val : 'mailto:' + val, isNewWindow, label, classes);
+        if (utils.is_email(val, true)) {
+            def.resolve(val.indexOf("mailto:") === 0 ? val : 'mailto:' + val, isNewWindow, label, classes);
+        } else {
+            $e.closest('.form-group').addClass('has-error');
+            $e.focus();
+            def.reject();
+        }
     },
     get_data_buy_url: function (def, $e, isNewWindow, label, classes, test) {
         def.resolve($e.val(), isNewWindow, label, classes);