According to the Domesday book he held 221 manors in Suffolk, 32 in Yorkshire, eight in Lincolnshire, three in Essex, two in Nottinghamshire, and one in Hampshire.
From 1070 to 1080, Malet was High Sheriff of Norfolk and Suffolk, and helped suppress the rebellion of Ralph Wader.
Malet reappeared in the public record three days after the death of William II in 1100, as a witness to Henry I's coronation charter.
In any case, Malet soon regained his office as Sheriff of Suffolk, and his honour of Eye.
However it appears that Robert Malet remained in the king's confidence and held his lands until his death.