Harry Cardwell and Gus Scott-Morriss were on target as Southend recorded their first win of the Vanarama National League season by beating Boston 2-0.
Striker Cardwell slotted the hosts, who drew their opening two fixtures, ahead inside two minutes at Roots Hall.
Boston have endured a difficult start since promotion and travelled south following heavy home defeats to Rochdale and Forest Green.
The Lincolnshire club were condemned to a third straight loss without scoring after Shrimpers full-back Scott-Morriss nodded home Noor Husin’s 52nd-minute cross to claim his second goal of the campaign.