Pinjo is a mailfilter that is placed in front of your mailserver. Actually you could describe it as mailserver without mailboxes; as so called mailproxy. After a significant number of checks the mail is forwarded to your own mailserver.
This is a fully working version, there is only one difference with the paid version; a short text is added in the body of every E-mail message, but there is no time limit in using it.
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