SolMailProxy is a local SMTP Proxy Server to prevent email from being
delivered to unauthorized recipients. SolMailProxy receives a mail from a
mail client and shows [Recipients Confirmation] Dialog to confirm recipients
of the mail to be authorized or not. This tool helps avoid a sensitive and
unencrypted mail including personal information or confidential information
of the company to be delivered to carelessly, mistakenly chosen or
unidentified recipients. (in Internet)