Steven King, 45, is accused of sending the email of "grossly offensive or of an indecent, obscene or menacing character" to Wallasey MP Angela Eagle.
Mr King, of Mirin Wynd, Paisley, Renfrewshire, was arrested in July and is charged under the Malicious Communications Act.
He is due before Wirral Magistrates' Court on 19 October, police said.
A man has been charged in connection with an offensive email sent to a Merseyside MP.