You can resume any stopped uploading. If a file to be transferred already exists in the remote directory and it is smaller than the one that is about to be uploaded, you can resume the uploading. When resume uploading a folder, Xftp checks the size of each file within the folder and selectively uploads the required files.

To append to the remote exiting file:

1. Select the file in the Local Folder window, and click Upload.
2. In the File Exists dialog box, select Resume.