spinning_disk_engineer

I'm looking into getting some domains for email, so I don't need to use the same few addresses for everything. In doing this, the domain name itself becomes the identity, but it's also entirely arbitrary.

What is a good method to choose domain names so that they look more or less normal? Catch all addresses can of course be detected in SMTP, but the idea is just to not look suspicious. Would anyone be comfortable sharing the constructions they use? (though not the domains themselves, for obvious reasons) Should I use subdomains for the things that can safely be correlated, (as spam defense) or is it better to only use different mailboxes on one domain?

What part of an android device is responsible for carrier locking? I understand that custom ROMs can sometimes be used to bypass a carrier lock, but how might I go about making such a ROM from stock?

This is complicated somewhat by the fact that the actual device I have, an Orbic Speed RC400L, isn't technically an android device; it runs busybox/linux, but its bootloader, adbd, and cellular systems seem to be android-like. I'm happy to experiment if someone can provide resources for the general android case.

I am trying to get rayhunter, but I am confused about a few things. What kind of hardware may be used? The Orbic RC400L advertises itself as being for Verizon network only, which I am not going to use. Does the rayhunter software allow it to work on arbitrary networks?

Furthermore, I don't see a good way to acquire such a device. They aren't sold locally as far as I can tell. On amazon they are available, though expensive. However, that would mean losing any form of privacy. I don't need it to be completely anonymous—someone looking at the location could probably see home and work easily enough—but better than amazon would be much preferred.

Are there any alternate devices that are known to work well in Canada? I will be keeping the device powered off most of the time anyways, (so as to hide my location) but it must be reliable when I need it.

EDIT: eSIM support is a plus, but not required

Since laser printers all encode metadata into the printed image, and handwriting is unique to the writer, I was wondering if a typewriter would provide a more anonymous form of paper communication.

I expect it would be possible to determine the model of typewriter, but would it be possible to tell if two samples were made on the very same machine? Are electric typewriters better or worse than manual? (assuming the same operator) What about Selectric or Wheelwriter – would frequently swapping out the typing element help?