For picking up a parcel, a valid form of identification (ID card, passport, or driver's license) is always required. Some online shops only want to release the package to you from the DHL point. Sometimes these packages are additionally insured, and a signature from the original recipient is required. You can read this in the email about your delivery. In that case, feel free to visit our shop yourself and collect your package upon presentation of a valid ID.
If the above is not mentioned in the email, someone other than the recipient can usually pick up the package, but only with valid identification.