Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Web Applications Stack Exchange is a question and answer site for power users of web applications. It only takes a minute to sign up.
If not, one has to add a FYI or a cc to a list of people in each message.
There is no way to subscribe others to cards.
Required, but never shown