A Grossbrief is just an usually A4 envelope for the bigger items and papers / books and magazines.
A registered ( Einschreiben ) mail is an additional option to buy for more protection against loss ( insured ), for tracking and sometimes faster delivery!
A certified is usually the same as registered!
You can on almost all mail add those additional options, maybe except postcards!
Even parcels!
But of course those are only available with Deutsche Post, other carriers have similar options!
Answers & Comments
Verified answer
Neither one!
A Grossbrief is just an usually A4 envelope for the bigger items and papers / books and magazines.
A registered ( Einschreiben ) mail is an additional option to buy for more protection against loss ( insured ), for tracking and sometimes faster delivery!
A certified is usually the same as registered!
You can on almost all mail add those additional options, maybe except postcards!
Even parcels!
But of course those are only available with Deutsche Post, other carriers have similar options!