Abstract: Methods, systems, and program products for electronic messaging involve: storing a permitted message category set in association with a receiver account; communicating with a sender computer device accessing the sender account to generate a message category input graphical user interface (GUI) element configured to receive a message category input limited to a member of the permitted message category set, for association with a message addressed to the receiver account; receiving from the sender computer device, and storing in the database, the message category input in association with the message; and communicating with a receiver computer device accessing the receiver account to generate on a display device of the receiver computer device a plurality of message category GUI elements and a message indicator GUI element indicative of the message in association with the message category GUI element corresponding to the message category input.