Thread:Extension talk:InputBox/Use InputBox with Newsletter extension

I am currently working on a Newsletter extension for Mediawiki ( GSoC project - Newsletter extension ). I along with my mentors planned on the minimum viable product for the extension, and InputBox would really come in handy for the Newsletter extension - while creating a new newsletter that is.

I was wondering if there were any examples of other extensions incorporating InputBox. If yes, could you list those extensions ?