diff --git a/docs/customization-checklist.md b/docs/customization-checklist.md
index 845d1e05..49f05649 100644
--- a/docs/customization-checklist.md
+++ b/docs/customization-checklist.md
@@ -25,6 +25,7 @@ Some generic things to update and check when starting to customize Starter app.
 - Update [EditListingWizard](../src/components/EditListingWizard/EditListingWizard.js) and panels to add extended data
 - Update [SearchPage](../src/containers/SearchPage/SearchPage.js) to filter with extended data
 - Update [routeConfiguration](../src/routeConfiguration) if needed
+- Update [Email templates](https://github.com/sharetribe/sharetribe-starter-app/tree/master/ext/mail-templates), all of them: .html, subject.txt, and text.txt
 - Update [config: bookingUnitType](../src/config.js) if needed
 - If `line-item/units` is used, add quantity handling
 to [BookingDatesForm](../src/containers/BookingDatesForm/BookingDatesForm.js), [ListingPage](../src/containers/ListingPage/ListingPage.js), [CheckoutPage](../src/containers/CheckoutPage/CheckoutPage.js)