Improve email branding and SMTP envelope

lib/email/payloadAdapter.ts

@@ -1,5 +1,5 @@
 import type { PayloadEmailAdapter } from "payload";
-import { getMailFrom, getMailTransport } from "./transport";
+import { getMailEnvelopeFrom, getMailFrom, getMailTransport } from "./transport";
 
 /** Connects Payload's built-in auth emails to the same SMTP transport as ANOUMA's own emails. */
 export const payloadEmailAdapter: PayloadEmailAdapter = () => ({
@@ -9,7 +9,8 @@ export const payloadEmailAdapter: PayloadEmailAdapter = () => ({
   sendEmail: async (message) => {
     return getMailTransport().sendMail({
       ...message,
-      from: message.from || getMailFrom(),
+      from: getMailFrom(),
+      envelope: { from: getMailEnvelopeFrom() },
     });
   },
 });