E.file status says my Mass. state return was accepted. Have not received an accept. email after > 24 hr. Mass. state tax site has no indication of my return. Problem?

This is normal, the State Refund process varies. State returns are usually accepted within a few days of filing but every state is different,

If you don't see an update in a few days, you can contact your State Department of Revenue directly - Tax Department: DOR's call center hours for tax help are 8:30 a.m. - 4:30 p.m., Monday through Friday. (617) 887-6367 or (800) 392-6089 (toll-free in Massachusetts) and their website is -  https://bit.ly/2Ttgq3w