diff --git a/app/api/mail/route.ts b/app/api/mail/route.ts
index e546901..1e6cd90 100644
--- a/app/api/mail/route.ts
+++ b/app/api/mail/route.ts
@@ -3,15 +3,20 @@ import Imap from 'imap';
 import { simpleParser } from 'mailparser';
 
 // IMAP configuration
-const imapConfig = {
-  user: process.env.IMAP_USER || 'alma@governance-labs.org',
-  password: process.env.IMAP_PASSWORD || '',
-  host: 'mail.infomaniak.com',
-  port: 993,
+const imapConfig: Imap.Config = {
+  user: process.env.IMAP_USER as string,
+  password: process.env.IMAP_PASSWORD as string,
+  host: process.env.IMAP_HOST || 'mail.infomaniak.com',
+  port: parseInt(process.env.IMAP_PORT || '993', 10),
   tls: true,
   tlsOptions: { rejectUnauthorized: false }
 };
 
+// Validate IMAP configuration
+if (!imapConfig.user || !imapConfig.password) {
+  throw new Error('IMAP credentials are not properly configured. Please check your .env file.');
+}
+
 interface ImapMessage {
   header: {
     from?: string[];