I am not getting "to" when email received by the receiver | Appwrite | Page 1

I am using cloud function to send an email when email received it doesn't have "to" email address. Please see attached image.

My cloud function detail:
built with: Dart
Email Provider: smtp2go

smtp2go logs

Received: from [10.91.244.249] (helo=worker-messaging-XXX-xpxt5)
    by smtpcorp.com with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256)
    (Exim 4.98.1-S2G)
    (envelope-from <[email protected]>)
    id 1vcp0K-FnQW0hPolK8-dfQz
    for [email protected];
    Mon, 05 Jan 2026 18:08:32 +0000
Date: Mon, 5 Jan 2026 18:08:30 +0000
To: undisclosed-recipients:;
From: AppWriteBackEnd Support <[email protected]>
Subject: Appwrite Event: Invalid Firmware File Uploaded
Message-ID: <MkO8dUf6pHE3t9Y2gI4dxBDfCkpvcCZUXwmnzTVbA@worker-messaging-67f9c75f74-xpxt5>
X-Mailer: PHPMailer 6.9.1 (https://github.com/PHPMailer/PHPMailer)
MIME-Version: 1.0
Content-Type: multipart/alternative;
 boundary="b1=_XXX"
Content-Transfer-Encoding: 8bit

#I am not getting "to" when email received by the receiver