This is demo version.
Upload 'MAX FILE SIZE' and 'Memory Limit' for demo are set to a lower value to minimize server load.
For this demo, best is to choose small size 2 or 3 files (only image file) to send via email attachment.
Files will not be uploaded anywhere, These will go directly in email as attachments.
Email will be sent to you, if you check 'Email yourself a copy' checkbox and give your correct email address below.