# -Mset
exim userx@test.x usery@test.ex
From: Himself <himself@there.tld>
To: Yourself <you@here.tld>
Subject: The subject is not the object

This is the body of the message.
****
sudo exim -be -Mset $msg1
From: $h_from:
Subject: $h_subject:
message_body_size=$message_body_size
message_size=$message_size
message_id=$message_id
message_exim_id=$message_exim_id
****
no_msglog_check