Automatic e-mail notification

Folks, forgive me if I have been in “la-la-land” on this subject. I just requested on a web page some information and normally you wonder where it goes etc. I was pleased to recieve an email in less than a minute informing me the individual was out of the office until Aug. 1st and given the option to leave a voice mail/or if urgent, the name and number of their backup.This was a first for me! OK, sorry if I not in the “00” century. I was thinking along these lines for my home computer if you could set up email to say you are not available. Thanks in advance for any words of wisdom.