Oct 28, 2016

How to lock PDF accidentally sent with an email message?

How can i lock a pdf that i have sent by mistake through an email from being opened? need help please.....
10/28/2016
It was an attachment.
10/28/2016
Sorry, bud, but then it's like trying to stop someone from looking at a photo that you sent through the mail. I hope it wasn't anything too sensitive.
10/28/2016
Was it an attachment or a link to a pdf stored in the cloud? If it was an attachment, you are out of luck.
10/28/2016
It was an attchment.
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