The Mél messaging system, often referred to as Melanie2web, is the email infrastructure deployed by the French state for several ministries. With the rise of strong authentication via Cerbère and the gradual migration to the digital office (Bnum), the scope of this tool is evolving. What exactly does the Mélanie mailbox cover in 2026, and how do its recent changes affect the daily lives of agents?
Mél and Melanie2web: two terms, two technical realities
A common confusion is to use “Mél” and “Melanie2web” as synonyms. Mél refers to the messaging infrastructure itself, which manages the routing of emails, address books, and shared calendars. Melanie2web, on the other hand, is merely the web portal that allows access to this infrastructure from a browser.
This distinction has practical consequences. The old URL of Melanie2web increasingly redirects to the Bnum (digital office), a space that centralizes messaging, calendars, documents, and collaborative tools. For the agent, this means they are no longer opening a simple webmail but a unified work environment. It is useful to consult the Mélanie mailbox on Esceri to understand the institutional framework of this messaging system.
| Characteristic | Mél (infrastructure) | Melanie2web (portal) | Bnum (digital office) |
|---|---|---|---|
| Role | Message routing, directory, calendars | Web interface for accessing Mél | Single entry point (messaging + calendar + documents + collaboration) |
| Browser access | No directly | Yes | Yes (gradually replacing Melanie2web) |
| Migration schedule | – | Redirects in progress | No public schedule announced |
The lack of an official schedule for the complete transition to Bnum creates a transitional period where some agents still access via the old URL while others are already using the new portal.
Cerbère Authentication and Remote Work Access: What Changes in 2026
Access to the Mélanie mailbox now systematically goes through the Cerbère authentication portal. This mechanism requires two-factor authentication (2FA), which has become the norm for all agents working remotely.
The second factor can take two possible forms:
- A TOTP code generated on the agent’s professional phone, renewed every thirty seconds
- A physical security key, plugged in via USB or used in NFC depending on the hardware
- The mandatory use of a VPN for any connection made outside the ministerial network
This triple layer (identifier, second factor, VPN off-network) places the Mél messaging system in a significantly more stringent security perimeter than traditional professional messaging solutions. For an agent on the move or working remotely, forgetting their physical key or not having configured the TOTP app means temporarily losing access to their emails.
Practical Consequences on Agents’ Daily Lives
The requirement for 2FA changes habits. An agent who changed positions or phones previously only had to re-enter their password. They now must reconfigure their second factor, which sometimes requires going through IT support. The loss of the second factor blocks access to the messaging system until it is reset.
In return, the risk of identity theft through phishing significantly decreases. Even if an agent inadvertently communicates their password, the attacker cannot bypass the second factor without physical access to the phone or key.
Concerned Ministries and Scope of the Mél Messaging System
Unlike a universal messaging system for the entire public service, Mél covers a specific ministerial scope. The ministries of Ecological Transition, Sustainable Development, Transport, Housing, Agriculture, and associated structures (agricultural education, regional directorates) use this infrastructure.
The storage of mailboxes has seen a notable increase: the quota has risen from 500 MB to 5 GB for agents in agricultural education, following repeated requests from trade unions. This tenfold increase in storage changes archive management: where agents previously had to regularly purge their mailbox, they now have a comfortable margin to retain several years of correspondence.
Features Beyond Email
Mél is not limited to sending and receiving messages. The infrastructure includes:
- A shared ministerial directory allowing agents to be found by name, service, or directorate
- A synchronized calendar for planning meetings between services
- Mailing lists managed at the directorate level, useful for downward communication
- Access to collaborative spaces via Bnum for document sharing
All of this operates on a platform hosted and controlled by the state, which excludes any transit of data through foreign private servers. The data remains on a sovereign infrastructure, a crucial criterion for exchanges involving sensitive or classified information.
Connection Refused on Melanie2web: Checks to Make
Access issues to the Mél messaging system generate a significant volume of requests to support. Before contacting assistance, several points deserve a quick check.
The first reflex is to verify that the VPN is active if the connection is made outside the ministerial network. Without a VPN, the Cerbère portal systematically refuses authentication. The second point concerns the TOTP code: a time difference on the professional phone (even by a few minutes) invalidates the generated code.
When the old URL of Melanie2web does not redirect correctly to Bnum, clearing the browser cache or using a private browsing window often resolves the issue. The redirection to Bnum depends on the browser and its cache, not on a server malfunction.
The evolution of the Mélanie mailbox reflects a fundamental trend in administration: moving from isolated tools to integrated platforms while enhancing access security. The migration to Bnum, combined with strong Cerbère authentication, is gradually reshaping the digital environment of the concerned agents. However, the lack of a public schedule for this transition leaves users in a gray area where the old and new portals coexist.
