• "eGOV Registered" / formal delivery:

This delivery type automatically checks the qualified electronic signature(s) (QES or other) in the attachments. If the electronic signature (QES or other) is invalid or absent, the mail will not be delivered (i.e. mandatory QES / electronic signature required). Legally valid confirmation of receipt is issued.

• "eGOV Registered" / informal delivery:

With this delivery type, the qualified electronic signature (QES or other) is not checked. This means that delivery without a QES is possible (i.e. no mandatory QES / electronic signature required). Legally valid confirmation of receipt is issued.

• "Encrypted":

This delivery type guarantees secure delivery. No confirmation of receipt is issued.