Mixnets could achieve the Holy Grail: metadata-resistant secure communications. Mixnet networks offer anonymity against the global passive adversary. The current best-of-breed anonymity system, Tor, is beginning to show its age. At the current rate of development and testing, we could see real-world deployment in the next year or two. The European Commission funded the Panoramix Project to investigate mixnets for 5 million to investigate the R&D project for 1.5 million.”]
Source: https://www.csoonline.com/article/3304586/are-mixnets-the-answer-to-anonymous-communications.html