David receives a strange email, what does it say?

The email has "E.P. + D.B." in the subject line, the same as was written on the tree in the woods near Lake Charmaine. In addition, there are twenty-one slashes, the same number that would be on the tree if David and Elizabeth had never missed making their mark on any of the anniversaries. David first believes that it's a "cruel, sick joke." David moves on to the body of the email and finds a hyperlink with the instruction to click on it at "kiss time." He knows the words "kiss time" refers to the moment of their anniversary and that time is documented because David looked at his watch immediately after that first kiss.