How do alias emails work?

When you add a service as an identity, Quackr ID creates a masked email that exists only for that service, something like amzn.k7x2@quackr.id. You give that to Amazon instead of your own email.

Everything Amazon sends, receipts and verification emails included, lands in your normal inbox as usual. You can also read it in the Email section of your dashboard.

You can create up to 100 identities, so there's room for every site that asks for an email.