ClamMail

ClamMail is small POP3 proxy with integrated ClamAV engine (libclamav) which first purpose was to replace old commercial antivirus proxy not working well. ClamMail components packed for Windows 98 are below 1MB in size together (installer is bigger becouse NT/XP service and translations are also inside).
Price 0
License Free to try
File Size 1.41 MB
Version 1.3.5
Operating System Windows XP Windows Windows 2000 Windows NT