website to process email attachments

The website offers customers the ability to sign up and receive an unique email address to which they can send their files. When a customer sends an email to this address, the website retrieves the email and separates the attachment.

The website passes the attachment to a program running on a Linux computer, which is invoked via command line. The program processes the attachment and generates a result. The result is then sent back to either the customer's email address or the customer can define another email adress, along with the original file.

All incoming emails and their attachments are stored on the website /portal and are available for the customer to download and review. The customer can log in to the website and access their account to download all sent files.

In summary, the website enables customers to securely and easily send their files to a dedicated email address, the files are automatically processed, and the results are sent back to the customer. All sent files and results are securely stored on the website and are available for the customer at any time.

would be great to use AdminLTE as base, but any other template will do fine...