diff --git a/apps/web/components/booking/pages/BookingPage.tsx b/apps/web/components/booking/pages/BookingPage.tsx
index 6e3be9b4..bffe4de7 100644
--- a/apps/web/components/booking/pages/BookingPage.tsx
+++ b/apps/web/components/booking/pages/BookingPage.tsx
@@ -2,6 +2,7 @@ import {
   CalendarIcon,
   ClockIcon,
   CreditCardIcon,
+  ExclamationCircleIcon,
   ExclamationIcon,
   InformationCircleIcon,
   RefreshIcon,
@@ -545,13 +546,22 @@ const BookingPage = ({
                         {...bookingForm.register("email")}
                         required
                         className={classNames(
-                          "focus:border-brand block w-full rounded-sm border-gray-300 shadow-sm focus:ring-black dark:border-gray-900 dark:bg-gray-700 dark:text-white dark:selection:bg-green-500 sm:text-sm",
-                          disableInput ? "bg-gray-200 dark:text-gray-500" : ""
+                          "focus:border-brand block w-full rounded-sm shadow-sm focus:ring-black dark:bg-gray-700 dark:text-white dark:selection:bg-green-500 sm:text-sm",
+                          disableInput ? "bg-gray-200 dark:text-gray-500" : "",
+                          bookingForm.formState.errors.email
+                            ? "border-red-700 focus:ring-red-700"
+                            : " border-gray-300  dark:border-gray-900"
                         )}
                         placeholder="you@example.com"
                         type="search" // Disables annoying 1password intrusive popup (non-optimal, I know I know...)
                         disabled={disableInput}
                       />
+                      {bookingForm.formState.errors.email && (
+                        <div className="mt-2 flex items-center text-sm text-red-700 ">
+                          <ExclamationCircleIcon className="mr-2 h-3 w-3" />
+                          <p>{t("email_validation_error")}</p>
+                        </div>
+                      )}
                     </div>
                   </div>
                   {locations.length > 1 && (
diff --git a/apps/web/public/static/locales/en/common.json b/apps/web/public/static/locales/en/common.json
index 5d1f4bb0..0bd6a2f6 100644
--- a/apps/web/public/static/locales/en/common.json
+++ b/apps/web/public/static/locales/en/common.json
@@ -804,6 +804,7 @@
   "impersonate_user_tip":"All uses of this feature is audited.",
   "impersonating_user_warning":"Impersonating username \"{{user}}\".",
   "impersonating_stop_instructions": "<0>Click Here to stop</0>.",
+  "email_validation_error":"That doesn't look like an email address",
   "place_where_cal_widget_appear": "Place this code in your HTML where you want your Cal widget to appear.",
   "copy_code": "Copy Code",
   "code_copied": "Code copied!",