The Pilgrims were beaten 2-1 by Kidderminster Harriers after slipping into a two-goal half-time deficit.
Easey’s 67th minute strike restored hope for United but Steve Welsh’s side were unable to force an equaliser which he felt their play deserved.
Boston (4-3-3): Tom Benton; Harry Bunce (Joe Cain 70), Billy Hodgkiss, Ollie Price, Corey Newman; Aaron Eyett, Jacob Pease, Jordan Sowerby; Steven Dovey (Karolis Andriulionis 70), Liam Moran, Will Quigley (Bradley Easey 50).