How do I reassemble a zip file that has been emailed in multiple parts?

The file is the first part of a split archive created with 7-Zip . This format is typically used to break large files into smaller segments for easier sharing or storage.

Solution Using 7z * Open the folder where the split folders are stored. In my case they were 16 files named from *.7z.001 to *.7z. Super User How to Extract .7z.001 files - Microsoft Q&A