Back to school in September, a new position in Loire-Atlantique, and the first administrative reflex is to open your professional email. Except that in 2026, the old link webmel.ac-nantes.fr leads nowhere. The academic messaging system of Nantes has changed its entry point, and many agents find themselves blocked on their first login.
End of Webmel and transition to national messaging in 2026
The significant event this year for the staff of the Nantes academy is the permanent deactivation of the old Webmel service on January 12, 2026. Shortcuts like webmel.ac-nantes.fr or bookmarks saved for years in the browser now return an error. This change alone accounts for a large portion of the support tickets opened at the beginning of the year.
The academy has migrated to the national messaging system hosted on messagerie.education.gouv.fr. This centralized portal is gradually replacing the old local webmails in several academies. For Nantes, you can also go through moncompte.ac-nantes.fr, which redirects to the same service after authentication.
If you want to access the academic messaging system of Nantes without error, the first thing to do is to update your browser bookmarks and remove any shortcuts pointing to the old URL.
Connecting to the academic webmail of Nantes: the concrete procedure
Go to messagerie.education.gouv.fr. The username remains in the format [email protected]. The password is the one for the academic portal, unless you have changed it recently via moncompte.ac-nantes.fr.
Once logged in, the interface offers the inbox, an integrated calendar, and a contacts list. The navigation resembles what you find on traditional webmails, with a few specific features related to the National Education environment.
Forgotten or expired password
The most common case is the expired password, especially after the summer holidays. Resetting it is done through moncompte.ac-nantes.fr, under the “password” section. You will receive a reset link at the personal address registered with the rectorate.
If no personal address has been provided beforehand, you must contact the academy’s IT support service directly. Response times vary depending on the time of year.
Error “invalid username”
This message often appears when the agent uses an old username or types their address without the suffix @ac-nantes.fr. Another trap: compound first names. The username follows a specific convention (hyphen, dot, or first letter of the second first name) that is not always intuitive. In case of doubt, the HR service of the institution can confirm the exact username.
Setting up a mail client or smartphone with the academic messaging system
Checking academic emails from Thunderbird, Outlook, or a smartphone mail app requires an additional step in 2026. The national messaging system requires a distinct application password from the academic password for any connection via an external client.
This password is generated from the national webmail, in the “Preferences” menu, then “Secure passwords.” You will obtain a random string to copy-paste into the mail client settings. The usual password does not work for this setup.
Technical settings to provide
The old local academic servers (like imap.ac-nantes.fr) are no longer operational. The settings to use are those of the national messaging system:
- IMAP Server: the one indicated on messagerie.education.gouv.fr in the configuration help section, accessible after logging into the webmail
- Port and encryption: TLS/SSL protocol, the exact port is listed in the same help section
- Username: the full address [email protected], associated with the application password generated above
On mobile, native mail applications (iOS Mail, Gmail for Android) accept these settings in manual configuration. Automatic configuration via “Add a professional account” does not always detect the national server, so manual mode is preferred.
Security and best practices on the ac-nantes.fr messaging system
The academic mailbox carries sensitive professional data: exam convocations, HR documents, exchanges with the rectorate. A few concrete reflexes protect the account on a daily basis.
- Do not reuse the academic password on other services (personal email, social networks). A compromised password elsewhere gives access to the professional mailbox
- Renew the application password on the national webmail after each device change (new phone, new computer)
- Check the recovery address on moncompte.ac-nantes.fr at least once a year, to avoid being blocked after an expiration
- Always log out of the webmail on a shared workstation (teachers’ lounge, library)
Each change of academic password invalidates the application password. Therefore, it must be regenerated after each renewal, or you risk losing synchronization on smartphone or desktop client.
Unknown features of the national webmail for Nantes agents
Beyond email management, the national webmail includes a shareable calendar and a contact manager. You can create address books by institution or by teaching team, which simplifies group sending at the beginning of the year.
The automatic filters function allows sorting incoming messages by sender or subject. For a teacher receiving both academic circulars, exchanges between colleagues, and administrative notifications, setting up two or three filters reduces noise in the inbox.
The interface also offers management of email signatures, useful for displaying your institution, discipline, and professional contact details consistently in each outgoing message.
The academic messaging system of Nantes now operates on a national platform shared with other academies. Updating your access, generating an application password, and taking five minutes to configure your filters is enough to ensure smooth usage for the entire school year.