diff --git a/lib/services/email-service.ts b/lib/services/email-service.ts
index 92e8e868..1e0d84fa 100644
--- a/lib/services/email-service.ts
+++ b/lib/services/email-service.ts
@@ -1403,7 +1403,7 @@ export async function forceRecacheUserCredentials(userId: string): Promise<boole
         host: account.host,
         port: account.port,
         email: account.email,
-        password: account.password,
+        password: account.password || undefined,
         secure: account.secure,
         smtp_host: account.smtp_host || undefined,
         smtp_port: account.smtp_port || undefined,