I’m looking for the feature I saw on my friend’s Macbook. When an email mentions a day and time for something, they get a dropdown menu to create a calendar entry from it. See also here: Create a Calendar Event From an Email in Mac OS X Mail (lifewire.com)
The eM Client has the option to “Create event from email”, but it does not parse the date and time from the text. At least in my case it does not. Or am I doing something wrong?