In 2006 it beat all of its bulk business mail targets, with 93.2% of first class business deliveries arriving on time compared with its 91% target.
It also delivered 99.6% of items correctly, compared with its target of 99.5%.
The target it missed required it to deliver at least 91.5% of first class mail on time in 118 postcode areas.
Royal Mail's performance is measured by market research firm Research International.