I sent an email to a friend today and for the following message (name redacted to protect the innocent):
If you feel as though your message is still relevant post-[return date], you should email her again then. If it is uber urgent and you know how, contact her mother or brother.
For good reason, [names] believes that a vacation is spoiled by coming home to an inbox that is a mile high filled with requests for things to do. When [names] returns, she will be starting a new job and she wants to be at her best without such a crazy backlog.
I apologize for [names]'s quirkiness. She's definitely an odd duck. But I think that she deserves a proper break from the world. I hope you do too.