In this case, the e-mails appears to be from the delivery service Chronopost.
This message indicates that the carrier has attempted to deliver a package to the recipient or is awaiting instructions for its delivery and is asking to pay shipping or postage costs.
If you are uncertain about the authenticity of an email, do not hesitate to contact the entity that seems to have sent you the email using a safe communication manner, using the phone for example (no phone number from the untrusted email must be used in order to verify the authenticity).
If you are working for the Luxembourgish government or are using any of the GOVCERT.LU services, it is important to forward phishing emails to us (using Reporting an incident or the Outlook button). This will allow us to take down phishing websites and protect members of our constituency.