The Copa America is the oldest in the world at the level of the teams, where it has been held so far 46 previous versions, Uruguay have the record as the most culminating teams in the Copa America with 15 tournaments, followed by Argentina with 14 titles, and Brazil in third place with 9 titles.
However, Australia - playing at their first Copa America - were drawn into Group A, which features Argentina, Bolivia, Uruguay, Chile and Paraguay.
Eight teams will qualify for the quarter-finals with the final to place on 12 July in Barranquilla, Colombia.
Qatar played in this year's Copa along with Japan, drawing their opening group match but failing to get past the group stage.
Argentina have not won the tournament since 1993 while Colombia have lifted the trophy only once - when they hosted it in 2001.
Scaloni hopes 32-year-old Messi, who will again be aiming to win his first senior worldwide trophy, plays beyond the 2020 Copa.