He has collaborated with several publications such as Panorama, Economy, Il Mattino, L'Indipendente, Il Messaggero, Corriere Adriatico…, in television with RAI, and since 2009 with the website Non Sprecare.
He also writes a political column for the Italian daily newspaper Il Messaggero.
In 1996 he acquired the Roman newspaper Il Messaggero from the Montedison Group, and the following year two local newspapers from private investors: Il Mattino based in Naples and Il Corriere Adriatico based in Ancona.
It is a national newspaper and the most popular daily newspaper in Rome and central Italy; It provides different local editions for the regions of Lazio, Umbria, Marche, Abruzzo and Tuscany.
In 1970 Elmi also became journalist and publicist, collaborating for three years with the newspaper Il Messaggero and later with a large number of magazines and newspapers.
After, he contributed to other newspapers and magazines, like il Borghese and Il Messaggero.
After working also for the newspaper Rinascita, Il Messaggero and Il Mattino (Beha later worked also for the right-winged L'Indipendente), in 1987 he began the host of TV show Va' pensiero, together with Communist journalist Andrea Barbato.
In the 1980s he collaborated with the newspapers Il Messaggero and L'Unità, for which he still works.
Caltagirone Editore S.p.A. is an Fourth Italian Publishing House, based in Rome, Italy, founded in July 1999 (after the purchase of the newspaper Il Messaggero and Il Mattino) and listed on the Italian Stock Exchange since December 2000.
He then started to collaborate with magazines and newspapers such as Linus, Alter Linus, Paese Sera, Il Messaggero, L'Espresso, L'Eternauta, Psyco, Corriere dei Ragazzi, Comic Art, Playmen, Menelik, L'Unità, and, in France, Pilote, Métal Hurlant, À Suivre, Circus, Le Monde, Fluide Glacial and others.