When adding a domain, you can also add a custom email address.

ui/src/repository/settings.ts

@@ -0,0 +1,26 @@
+import { Setting } from "@/domain/settings";
+import { getPb } from "./api";
+
+export const getEmails = async () => {
+  try {
+    const resp = await getPb()
+      .collection("settings")
+      .getFirstListItem<Setting>("name='emails'");
+    return resp;
+  } catch (e) {
+    return {
+      content: { emails: [] },
+    };
+  }
+};
+
+export const update = async (setting: Setting) => {
+  const pb = getPb();
+  let resp: Setting;
+  if (setting.id) {
+    resp = await pb.collection("settings").update(setting.id, setting);
+  } else {
+    resp = await pb.collection("settings").create(setting);
+  }
+  return resp;
+};