How to send electronic large files to the RIF Office?

How do I send large files to the administration?

To send large files to the administration, log in to the following address: https://melanissimo-ng.din.developpement-durable.gouv.fr

After entering your email address and the security code, you will receive an email like this: Copy the code (CTRL-C) then click on the proposed link: you are directed to a page where you can enter your message and insert the large files. The code is a security key to verify that you are the sender. Paste the code in the indicated place (CTRL-V).

Regarding the files to be sent, it is preferable to group them in a single zip. file.
Additional information:

• the average loading time for 200 MB is 30 minutes (depending on the network);
• the retention period (storage on a server) depends on the message size (example: 1 GB → 3 days max, 500 MB → 4 days max, etc … , maximum 14 days);
• when the retention date expires, a message is sent to the issuer with a
  summary report of file downloads.