You do not need to worry if the file being received is UUencoded, XXencoded, BinHex, or a MIME file (base64, plain/text, and quoted-printable). WinZip® will detect the method being used and automatically decode it.
As is the case with Zip files, WinZip offers more than one way to open encoded files. For example:
Note: You can also open a file using WinZip's Open toolbar button, or drag and drop a file into WinZip, regardless of the file's extension.
UUencoded, XXencoded, BinHex, and MIME files
Sending Files using Internet Mail
The Why behind UUencoding and Other Schemes
Receiving and Preparing Files for Decoding
Decoding Files using WinZip
UUencoding a File using WinZip
Hints, Tips, & Troubleshooting