imap.sh

#!/bin/sh
if [ "$#" -ne 3 ]; then
	echo "Usage: $0 host id pass"
	exit 1
fi
openssl s_client -connect $1:993 -quiet << EOF
a1 LOGIN $2 $3
a5 LOGOUT
EOF

smtp.sh

#!/bin/sh
if [ "$#" -ne 3 ]; then
	echo "Usage: $0 host id pass"
	exit 1
fi

ID=`echo "$2" | base64`
PASSWORD=`echo "$3" | base64`
openssl s_client -starttls smtp -crlf -connect $1:25 -quiet << EOF
EHLO $1
AUTH LOGIN
$ID
$PASSWORD
QUIT
EOF