When assets (covers, content files such as ePub and PDF files, or manifests) are added to the _INBOX on sftp://ftp.netgalley.com and successfully import into your NetGalley publisher account, you will receive a NetGalley Import Report email.
The email is sent to the email address specified in the File Import Notices field in your account. (How do I change that?)
If you have added an asset to the _INBOX at sftp://ftp.netgalley.com, and it is not included in the email report and is not available in your NetGalley account, double check that your files are named correctly and uploaded into the _INBOX folder on sftp://ftp.netgalley.com, using these exact instructions. Re-upload the file if it was misnamed the first time.