Acts as a mRNA export factor involved in nucleocytoplasmic transport (PubMed:20498086, PubMed:33849972). Plays a role in mitotic bipolar spindle formation (PubMed:17172455). May function in attaching cytoplasmic mRNPs to the cytoskeleton both directly or indirectly (PubMed:17172455). {ECO:0000269|PubMed:17172455, ECO:0000269|PubMed:20498086, ECO:0000269|PubMed:33849972}. This is the function of RAE1 (ribonucleic acid export 1, Ensembl gene identifier ENSG00000101146).