upld.im does not require registration in order to upload images or create albums, so it doesn't record any email addresses.
We do not collect any personally identifiable data on people who view images. Hovewer, when visitor uploads image to upld.im server information about visitor is recorded so in case of abuse of our terms of service our staff can easily identify and block offending user. Information about uploader is available only to staff members and it's not displayed anywhere in public or given to anyone.