show a different message for custom domain alias when deleting

app/dashboard/templates/dashboard/index.html

@@ -432,6 +432,9 @@
 
                   <span class="btn btn-link btn-sm float-right text-danger"
                         onclick="confirmDeleteAlias.call(this)"
+                        {% if alias.custom_domain %}
+                          data-custom-domain-trash-url="{{ alias.custom_domain.get_trash_url() }}"
+                        {% endif %}
                         data-alias="{{ alias.id }}"
                         data-alias-email="{{ alias.email }}"
                   >

app/models.py

@@ -1684,6 +1684,9 @@ class CustomDomain(db.Model, ModelMixin):
     def nb_alias(self):
         return Alias.filter_by(custom_domain_id=self.id).count()
 
+    def get_trash_url(self):
+        return URL + f"/dashboard/domains/{self.id}/trash"
+
     def __repr__(self):
         return f"<Custom Domain {self.domain}>"
 

static/js/index.js

@@ -3,10 +3,17 @@ $('.mailbox-select').multipleSelect();
 function confirmDeleteAlias() {
   let that = $(this);
   let alias = that.data("alias-email");
+  let aliasDomainTrashUrl = that.data("custom-domain-trash-url");
+
+  let message = `Maybe you want to disable the alias instead? Please note once deleted, it <b>can't</b> be restored.`;
+  if (aliasDomainTrashUrl !== undefined) {
+    message = `Maybe you want to disable the alias instead? When it's deleted, it's moved to the domain 
+    <a href="${aliasDomainTrashUrl}">trash</a>`;
+  }
 
   bootbox.dialog({
     title: `Delete ${alias}`,
-    message: `Maybe you want to disable the alias instead? Please note once deleted, it <b>can't</b> be restored.`,
+    message: message,
     size: 'large',
     onEscape: true,
     backdrop: true,