I have substituted up to 2/3 of the private traditional postal mail with SMS/MMS messages. (Most of the messages that I used to send with the traditional postal mail I now send with mobile phone).
Do približno 2/3 navadne pošte sem nadomestil/a s SMS/MMS sporočili. (Večino sporočil, ki sem jih prej pošiljal/a z navadno pošto, sedaj pošiljam z mobilnim telefonom).