Abstract: An envelope feed apparatus comprises a main body having a bottom; top (located opposite the bottom); and sides (located between the bottom and the top). The main body top has a flat surface that supports, for example, a stack of envelopes. The envelope feed apparatus also has a slider that includes sides contacting at least two of the main body sides. The slider sides move in a parallel direction to the main body sides as the slider moves relative to the main body. The slider has at least one roller connected to opposing slider sides. The roller(s) are positioned adjacent the main body top. The roller(s) move in a perpendicular direction to the flat surface of the main body top as the slider moves relative to the main body. The roller(s) contact the stack of envelopes when the stack of envelopes is on the flat surface of the main body top and apply pressure to the stack of envelopes in the perpendicular direction toward the flat surface of the main body top.