I think everyone would really appreciate this feature (embedding HTML reports into email body) as soon as possible.
Safe to say is that lots of users/recipients will open these reports on their phones and having a zip file means they will not open them at all, or will not be able to unzip files easily.
It was first planned for 17.1 release, then delayed. Later on someone mentioned in this thread (embed html report nprinting 17 | Qlik Community) that a new plan is to publish it with 17.2 release in September.
sjw - can you comment on this, is there any confirmation that we are going to see this feature in 17.2 version?
This is not going to be part of the 17.2 release unfortunately.
It remains the top priority of the remaining gap features from NPrinting 16. We expect to release it next year but I do not have a date as of right now.
And yes, embedding the report means that it would have to be HTML and not a zip file.