diff --git a/apps/backend/src/lib/mailer.ts b/apps/backend/src/lib/mailer.ts
index 0d57130..c9f2ca0 100644
--- a/apps/backend/src/lib/mailer.ts
+++ b/apps/backend/src/lib/mailer.ts
@@ -1,5 +1,5 @@
 import nodemailer from 'nodemailer';
-import { MailtrapTransport } from 'mailtrap';
+import { MailtrapClientConfig, MailtrapTransport } from 'mailtrap';
 
 const TOKEN = Bun.env.MAILTRAP_API_TOKEN;
 
@@ -12,12 +12,16 @@ function getTransporter() {
     throw new Error('Missing MAILTRAP_API_TOKEN env var.');
   }
 
+  const config: MailtrapClientConfig = {
+    token: TOKEN,
+    sandbox: Bun.env.MAIL_SANDBOX === 'true',
+    testInboxId: Bun.env.MAIL_INBOX_ID ? Number(Bun.env.MAIL_INBOX_ID) : undefined,
+  }
+
+  console.log(JSON.stringify(config, null, 2));
+
   cachedTransporter = nodemailer.createTransport(
-    MailtrapTransport({
-      token: TOKEN,
-      sandbox: Bun.env.MAIL_SANDBOX === 'true',
-      testInboxId: Bun.env.MAIL_INBOX_ID ? Number(Bun.env.MAIL_INBOX_ID) : undefined,
-    })
+    MailtrapTransport(config)
   );
   return cachedTransporter;
 }