diff --git a/addons/website/static/src/snippets/s_website_form/options.js b/addons/website/static/src/snippets/s_website_form/options.js
index de3decfe3e2..23d2330d62d 100644
--- a/addons/website/static/src/snippets/s_website_form/options.js
+++ b/addons/website/static/src/snippets/s_website_form/options.js
@@ -12,6 +12,7 @@ import { unique } from "@web/core/utils/arrays";
 
 const qweb = core.qweb;
 const _t = core._t;
+let currentActionName;
 
 const FormEditor = options.Class.extend({
     //----------------------------------------------------------------------
@@ -335,6 +336,7 @@ options.registry.WebsiteFormEditor = FormEditor.extend({
         
         const targetModelName = this.$target[0].dataset.model_name || 'mail.mail';
         this.activeForm = this.models.find(m => m.model === targetModelName);
+        currentActionName = this.activeForm.website_form_label;
         // Create the Form Action select
         this.selectActionEl = document.createElement('we-select');
         this.selectActionEl.setAttribute('string', 'Action');
@@ -734,6 +736,7 @@ options.registry.WebsiteFormEditor = FormEditor.extend({
             }
             this.$target.find('.s_website_form_field').remove();
             this.activeForm = this.models.find(model => model.id === modelId);
+            currentActionName = this.activeForm.website_form_label;
         }
         const formKey = this.activeForm.website_form_key;
         const formInfo = FormEditorRegistry.get(formKey);
@@ -1536,9 +1539,28 @@ options.registry.WebsiteFormFieldModel = DisableOverlayButtonOption.extend({
 // Disable delete button for model required fields
 options.registry.WebsiteFormFieldRequired = DisableOverlayButtonOption.extend({
     start: function () {
-        this.disableButton('remove', _t('This field is mandatory for this Action. You cannot remove it.'));
+        this.disableButton("remove", _t(
+            "This field is mandatory for this action. You cannot remove it. Try hiding it with the"
+            + " 'Visibility' option instead and add it a default value."
+        ));
         return this._super.apply(this, arguments);
-    }
+    },
+
+    //--------------------------------------------------------------------------
+    // Private
+    //--------------------------------------------------------------------------
+
+    /**
+     * @override
+     */
+    async _renderCustomXML(uiFragment) {
+        const fieldName = this.$target[0]
+            .querySelector("input.s_website_form_input").getAttribute("name");
+        const spanEl = document.createElement("span");
+        spanEl.innerText = sprintf(_t(
+            "The field '%s' is mandatory for the action '%s'."), fieldName, currentActionName);
+        uiFragment.querySelector("we-alert").appendChild(spanEl);
+    },
 });
 
 // Disable delete and duplicate button for submit
diff --git a/addons/website/views/snippets/s_website_form.xml b/addons/website/views/snippets/s_website_form.xml
index a3dc44b249f..46c4b93f3fe 100644
--- a/addons/website/views/snippets/s_website_form.xml
+++ b/addons/website/views/snippets/s_website_form.xml
@@ -67,6 +67,12 @@
         </div>
 
         <!-- Field -->
+        <div data-js="WebsiteFormFieldRequired" data-selector=".s_website_form .s_website_form_model_required">
+            <!-- Disable the delete option of model required fields and show
+            alert and tooltip on delete buttons -->
+            <we-alert class="mt-2"></we-alert>
+        </div>
+
         <div data-js='WebsiteFieldEditor' data-selector=".s_website_form_field"
              data-exclude=".s_website_form_dnone" data-drop-near=".s_website_form_field">
             <we-select data-name="type_opt" string="Type" data-no-preview="true">
@@ -227,9 +233,6 @@
         <!-- Remove the duplicate option of model fields -->
         <div data-js="WebsiteFormFieldModel" data-selector=".s_website_form .s_website_form_field:not(.s_website_form_custom)"/>
 
-        <!-- Remove the delete option of model required fields -->
-        <div data-js="WebsiteFormFieldRequired" data-selector=".s_website_form .s_website_form_model_required"/>
-
         <!-- Remove the delete and duplicate option of the submit button -->
         <div data-js="WebsiteFormSubmitRequired" data-selector=".s_website_form .s_website_form_submit"/>
     </xpath>