Hidden mode
When you need to read a message and you are in a place where
someone else might be looking at what you are doing in your web
browser, you may want to use the hidden mode.
In hidden mode the message content is hidden using black bars and
you need to hover your mouse pointer over the bars to reveal the
content.
This feature is CSS based so you don't need to have JavaScript
enabled.
With a mobile device, you may need to select and copy the black
bars to a text editor app instead. In some text editors, you may
also need to change the text colour or text background colour.
Please note that in order to use the hidden mode, the message must
be unread, meaning that you can't switch from normal mode to
hidden mode if you are already reading the message in normal
mode.
To use hidden mode, simply copy the normal message URL, change the
last letter to H and open it in your browser.
Example:
https://Temp.pm/?xxxxxx-x-xxxxxx-N = Normal mode
https://Temp.pm/?xxxxxx-x-xxxxxx-H = Hidden mode