Hello,
The rules for redistributing Newman are clear from its Apache License 2.0 (newman/LICENSE.md at develop · postmanlabs/newman · GitHub). As far as I understand Terms of Service | Postman is the license document for the Postman app. It is not clear to me from the terms whether it is allowed to redistribute the Postman app.
My situation is that I am preparing an artifact for a paper, and I have included a downloaded copy of the free version of the Postman app in the artifact. I use the Postman app in the artifact to allow users to interact with my application which only has a REST interface. The Postman app is only included as means of interacting with my application, the instructions clearly state that Postman is in no way related to my work with a link to the Postman website, and the “Terms of Service” for Postman are included in the artifact. The Postman app is in the artifact as a downloaded copy because the artifact needs to be self-contained and usable even without internet connection, meaning I cant just give a link for people to download Postman from. The artifact will then be archived and publicly available for download by anyone.
Thanks!