While there is no official "download" button, users often seek workarounds for legitimate reasons. According to various security researchers and Google Help documentation, the following applies: Download Pdf From Gmail Confidential Mode - Google Groups
Gmail’s is designed to give you more control over your sensitive information by preventing unauthorized sharing. However, a common point of confusion is the gmail confidential mode download attachment limitation: by design, recipients cannot natively download, copy, or print attachments sent in this mode. Understanding Confidential Mode Restrictions gmail confidential mode download attachment
When you send an email with Confidential Mode enabled, Google effectively replaces the message body and attachments with a link to content hosted on its own servers. This allows the sender to set expiration dates or revoke access at any time. While there is no official "download" button, users
: Recipients will see a notice that options to download, forward, or print are disabled. : Senders can require a passcode sent via
: Senders can require a passcode sent via text for the recipient to view the content. Why You Can’t Download Attachments (Officially)
: Once the set date passes (ranging from 1 day to 5 years), the content becomes inaccessible.