MSP360 Explorer (starting from v. 2.8 and later) supports Multipart API for copy objects. Amazon S3 features an option to copy large objects using Multipart API and you can copy objects up to 5 terabytes.
MSP360 Explorer supports this option. Whenever you want to copy an object that is larger than 5MB, the Multipart API will be used providing more reliability and better performance. Using Multipart enables you to copy many parts of the object in parallel making the copy operation faster for these large objects.