Specifically recognizes and binds N6-methyladenosine (m6A)-containing RNAs, and regulates their stability. Specifically recognizes and binds N6-methyladenosine (m6A)-containing RNAs, and regulates their stability. Acts as a regulator of mRNA stability by promoting degradation of m6A-containing mRNAs via interaction with the CCR4-NOT and ribonuclease P/MRP complexes, depending on the context