Utilizes and receives X.400 addressed messages. C. Packet network connections. Access to and from Internet Telnet. Has a way to transfer binary files. Access from toll-free 800 number for lower 48 states.
Sender can request an automatic receipt when a message is read.
MCI Mail 3. ATT Mail 4. Despite frequent mention of DASnet, this is not an endorsement of their service. Delivery is not always instantaneous. Six hour delivery is not uncommon.