Gmail users can now use Gmail’s Confidential Mode to send self-descruting emails on Android and iPhone.
We showed you how the new Confidential Mode works in Gmail back in May, but that was on the desktop. The feature is now offered in the Gmail mobile app. Just start composing a message on your phone, then click the settings button at top-right. Select “Confidential Mode” and you’ll be asked about the expiration date and an optional passcode.
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As we’ve explained, confidential messages are hosted on Google’s servers, not sent over email. This has its downsides—recipients who aren’t viewing the email in Gmail have to click a link to open messages in a browser, for example. It’s all quite seamless between Gmail users, however.
Experts are divided on how secure this is, of course, because it’s always possible for whoever you email to just take a screenshot. You might find it worthwhile, just don’t send passwords or anything using it.