Company President doesn’t want sales to use ‘out-of-office’; they’d prefer that the customer feel we were always available for them – 24/7. They also say that vacation are just nicer places to read emails….
John Whatsisname has retired. Please contact [insert name and email] for enquiries relating to [subjects], or myself at [email] for personal matters. Thank you to my colleagues and clients for your support over the years.

Both of these tools are designed to help you go from Email Explorer to Email Extractor – and get you from guessing to going when it comes to dealing with your email inbox.
I used to work with someone who had a message telling people she only checked her email twice a day. You pretty much needed to call her if you needed anything outside of those times. (She worked in a remote office.) I think she had read one of those books on efficiency that recommended scheduled email time. But there were problems with this: 4. My department often had to email attachments or text to illustrate our questions/concerns. And we were on deadlines. Reading a page of text over the phone was not an efficient use of anyone’s time 5. She did outreach & was often out of the office on site visits, trainings, or travel to these places, but never ever set her OOO for these, because she was “working.” However, she was effectively not available to read emails from other staff until after hours on those days.