Internet Mail Client ActiveX Controls - Version 1.2 SMTP and POP3 ActiveX objects supporting a common RFC 1341 Message Object. Automatic 7Bit/Quoted-Printable/Base64 encoding and decoding. Multipart message support through OLE collections - SMTP client encapsulates message parts, POP3 Client explodes message parts into a collection object. Full access to MIME headers through a collection object or simplified access through properties.