When I want to deploy a new version and some users are (despite set agreements) still active in the application, I want to be able to somehow let them know of what is happening.
Possible solution would be to have a checkbox with "Alert active users?" when stopping the application, which would notify them in some way, explaining why the application 'suddenly' is not working anymore. This can be a popup, an e-mail, or even an alternative landing page.
I am curious to hear what other people usually do in a similar situation?