- When getting new mail, Rmail first copies the new mail from the inbox
-file to the Rmail file; then it saves the Rmail file; then it truncates
-the inbox file. This way, a system crash may cause duplication of mail
-between the inbox and the Rmail file, but cannot lose mail. If
-@code{rmail-preserve-inbox} is non-@code{nil}, then Rmail will copy new
-mail from the inbox file to the Rmail file without truncating the inbox
-file. You may wish to set this, for example, on a portable computer you
-use to check your mail via POP while traveling, so that your mail will
-remain on the server and you can save it later on your workstation.
+ When getting new mail, Rmail first copies the new mail from the
+inbox file to the Rmail file; then it saves the Rmail file; then it
+clears out the inbox file. This way, a system crash may cause
+duplication of mail between the inbox and the Rmail file, but cannot
+lose mail. If @code{rmail-preserve-inbox} is non-@code{nil}, then
+Rmail does not clear out the inbox file when it gets new mail. You
+may wish to set this, for example, on a portable computer you use to
+check your mail via POP while traveling, so that your mail will remain
+on the server and you can save it later on your workstation.