For me and many other players we like front toss as opposed to soft toss (from the side) or tee work.
Normal front toss is done from about 15 feet away from the hitter. You can be sitting down or standing up as you toss.
This drill is a good way to get swing in seeing the ball come from the same direction as bp would while be able to control the location of the pitches better.
Ever time I hit I start or at least use this drill before I take my first swings on the field.
Now this drill doesn't put the hitter in a position to hit with a high level swing per se, because it is similar to bp. I'm just telling you a drill that the majority of high level hitters do.
It is a great drill to work with at any time during the development or maintenance of the high level swing.
I know for me it was essential in getting the feel for the "tip n' rip."