An alias is an additional email address that can be added in the settings of your Posteo account. You can add as many as 20 alias addresses. The first two alias addresses are free; each additional address costs an extra 0.10 EUR per alias, per month. Emails sent to your alias addresses will be automatically delivered to your inbox.
What are alias addresses used for?
Alias addresses allow you to communicate using various identities. You can decide yourself who to share your “real” Posteo address with, and who not to. If, for example, you would like to take part in an online competition, you can set up a temporary alias (e.g. firstname.lastname@example.org) and then delete it once it is no longer required. This reduces the risk that spammers, criminals or data-peddlers attain your real email address.
Alias addresses also enable you to use different addresses for different purposes. You could, for example, use a different address to communicate with your employer from that which is used with friends. Communication using various addresses can easily be managed in your email account.