fix: properly awaits email send to catch potential errors #2444 (#2470)

src/email/sendEmail.ts

@@ -2,15 +2,17 @@ import { SendMailOptions } from 'nodemailer';
 
 export default async function sendEmail(message: SendMailOptions): Promise<unknown> {
   let result;
+
   try {
     const email = await this.email;
-    result = email.transport.sendMail(message);
+    result = await email.transport.sendMail(message);
   } catch (err) {
     this.logger.error(
       `Failed to send mail to ${message.to}, subject: ${message.subject}`,
       err,
     );
     return err;
   }
+
   return result;
 }

test/collections-rest/config.ts

@@ -35,6 +35,29 @@ export const customIdNumberSlug = 'custom-id-number';
 export const errorOnHookSlug = 'error-on-hooks';
 
 export default buildConfig({
+  endpoints: [
+    {
+      path: '/send-test-email',
+      method: 'get',
+      handler: async (req, res) => {
+        await req.payload.sendEmail({
+          from: 'dev@payloadcms.com',
+          to: devUser.email,
+          subject: 'Test Email',
+          html: 'This is a test email.',
+          // to recreate a failing email transport, add the following credentials
+          // to the `email` property of `payload.init()` in `../dev.ts`
+          // the app should fail to send the email, but the error should be handled without crashing the app
+          // transportOptions: {
+          //   host: 'smtp.ethereal.email',
+          //   port: 587,
+          // },
+        });
+
+        res.status(200).send('Email sent');
+      },
+    },
+  ],
   collections: [
     {
       slug,