rmail(1)
Name
rmail − route mail to users on remote systems
Syntax
rmail user...
Description
The rmail command interprets incoming mail received via uucp(,), collapsing “From” lines in the form generated by binmail() into a single line of the form “return-path!sender”, and passing the processed mail on to sendmail(.).
The rmail is explicitly designed for use with uucp and sendmail.