Please enable '.asice' file extension for sending and receiving emails and media library.

It is widely used in Estonia and other European countries for official e-government, legal, and business document exchanges. It allows sending and receiving digitally signed documents.

By the way- anybody (who is eligible) in the world can request an Estonian Digital-ID (eID) to be able to identify themselves and sign documents remotely!

Search for "E-Resident's Digital ID".