While NymVPN is already pretty cool when using fast mode with the Tor Network, I have created yamn-proxy which allows you to send anonymous emails or Usenet postings, for longer latency of messages arrival.
Please check yamn-proxy out and I hope that you like it.
Binaries for Android/Termux are available. Tested with a 10 years old SAMSUNG J5, but had to use Kaspersky VPN and Tor, because NymVPN is to new for such an old smartphone.
Maybe interesting for some of you, when concerned about files saved on modern SSDs or flash drives, which probably makes forensics easier than in the old magnetic hard drive days. What do I mean with that? When using a modern Mixnet like Nym, let’s say with GnuPG file encryption and public keys, you might leave traces on devices. I thought about that and created ‘seced’ and ‘wipe’, so that users always have to save files AES-256-GCM encrypted with a password (through Argon2id) and then can mail through the Mixnet, while later wiping the encrypted file with ‘wipe’, which first encrypts the file to be deleted and then applies a Gutmann-35 wiping pass.