A machine (1) for preparing and dispensing a beverage (2) has: a capsule extraction unit (10) having a first part (11) and a second part (12) that are relatively movable between a distant position for inserting a capsule (3) and a close position for extracting such capsule (3); a control unit (40) for controlling the extraction unit (10) to extract such capsule (3); an outlet (20) for dispensing said beverage (2) formed by extracting such capsule (3) to a user-receptacle (4) located in a receptacle placing area; and a detection arrangement (30) connected to the control unit (40) for detecting the presence of such receptacle (4) in the placing area. The unit (10) has an actuator (13) configured to relatively move the first and second parts (11, 12) between their distant and close positions. The actuator (13) is controlled by the control unit (40) to relatively move the first and the second parts (11, 12) when the detecting arrangement (30) detects the presence of said receptacle (4) in the receptacle placing area.