

I think that having any kind of recognizable email is against the idea of privacy. So I would set up the following layering:
- Mozilla Relay/TempMail (randomized email accounts)
for most of shops, job applications, etc. If it leaks you can easily disable the account and/or rotate it on periodic basis to limit the cross-database matching (the privacy part) - a few separate domains for things where you can’t stop receiving mails or having an account is really worth it
- one for banks
- one for government
- one for the few shops where the first layer is not enough
- one for private exchange
- the provider that can change
I think that methodology is wrong. If they analyzed only one instance, then the whole follwer-followee thing might be completely off. And while they measured how many replied frequently, it lacks the “how many replies they got” side
It’s like comparing engagement on whole network vs via only one edge