Easey had fired the Pilgrims into a 35th minute lead — but United’s advantage lasted until only five minutes after the break.
It was nevertheless a building block for Steve Welsh’s side, who collected their first league point at the second attempt.
Boston (4-3-3): Tom Benton; Daniel Worthington (Harry Bunce 50), Josh Spencer (Billy Hodgkiss 60), Ollie Price, Jordan Sowerby; Miles Lynch, Jacob Pease, Joe Searson (Leon Squire 60); Steven Dovey, Liam Moran, Bradley Easey. Subs (not used): Karolis Andriulionis, Juris Kormis.