I'd like to ask you something: you calculated the (No)Update column, but if I wanted to just include this value in the body of the email, would that be possible?
Do you mean you wish to include a single value (i.e. the value of column XYZ row 1) in an email body such as:
To Bob, Here is some long text including a {value} as part of the text.
From Dave
If so then you would need to move the email sending to a separate module and to pass the calculated value to the module as a parameter. You can use parameters in the email body by wrapping them in curly braces { }