Most domain registrars require providing identity details. Even if these details are private, a single leak or a config mistake on this domain will expose your real identity, tied to all aliases. With an alias service or a shared email provider you don't have this risk as you don't have to provide your real-life identity.
So while it's tempting to use one random alias ([email protected]) for a high-risk service and another alias for a critical service ([email protected]), these aliases are easily identifiable as belonging to the same person.
So while it's tempting to use one random alias ([email protected]) for a high-risk service and another alias for a critical service ([email protected]), these aliases are easily identifiable as belonging to the same person.