Can have email addresses

A brief explanation of the e-mail address

The e-mail address is the address that you use to receive and send e-mails. It is shown to the recipients of your sent e-mails so that they know who you have received an e-mail from.

Each e-mail address can only be assigned once worldwide and is therefore exclusively available to you. You cannot change e-mail addresses, but you can delete them at any time.

There are certain requirements for spellings with special characters or umlauts, as these are not always used internationally in every country.

An e-mail address consists of an @ sign plus a local part in front of it and a domain part after it, as in our example [email protected]:

The Domain part depends on the domain under which the e-mail address is created - in our example this is This varies from provider to provider, so a domain part can also be or if you use an email address from these providers.
If you have registered your own domain, e.g., the e-mail addresses that you set up for the domain have them as part of the domain.

Under local part - in our example [email protected] the entry local part - the part of an e-mail address is called that you can largely choose freely. Here you can, for example, use your own name or the name or department in a company.
If you use an e-mail address with a mail provider such as or, it can happen that the combination with the desired domain part is already registered. In this case, you need to think of alternatives for the local part of your email address.
If you use your own domain instead, these restrictions do not apply because it is only you who can create e-mail addresses that match your own domain.