Email that delivers — and tells you so

1// Transactional: template + variables, bypasses unsubscribes.
2await stackAdminApp.sendEmail({
3  userIds: [user.id],
4  templateId: "receipt",
5  themeId: "theme_brand",
6  variables: { name: user.name, total: 129.0 },
7  notificationCategoryName: "Transactional",
8});
9 
10// Marketing broadcast to every user — includes an unsubscribe link.
11await stackAdminApp.sendEmail({
12  allUsers: true,
13  templateId: "october_digest",
14  themeId: "theme_brand",
15  notificationCategoryName: "Marketing",
16});