A La Poste, an agent looking to take leave does not use the same portal as one who wants to check their schedule for the following week. GTM Extranet and Ma Box RH coexist, but their scopes only overlap marginally. Knowing which one to open first helps avoid going in circles between two interfaces that do not provide the same information.
Schedules and time tracking: the domain of GTM Extranet
GTM Extranet remains the reference portal for everything related to daily working time. Schedule consultations, clocking in, working hours cycles, tracking overtime: all data related to time management can be found here.
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For most agents, it’s the tool they open at the beginning of the week to check a time slot or report a clocking anomaly. The interface is a bit outdated and the mobile ergonomics are limited, which often forces users to go through a fixed workstation or a desktop browser.
One point to keep in mind: the procedure to log in to GTM Extranet La Poste still relies on the RH identifier and password, with a virtual keyboard for input. In case of forgetfulness, resetting requires a dedicated form linked to the professional email address.
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Feedback varies on this point, but some pilot profiles have reportedly started to see part of the counters (leave balances, time summaries) also appear in Ma Box RH since 2024. For the majority of agents, the rule remains simple: everything related to schedules is managed in GTM.
Leave and personal data: the scope of Ma Box RH
Ma Box RH was designed to centralize individual administrative procedures. Checking leave balances, online leave requests, updating personal details, accessing HR documents: this is the portal focused on the “agent file”.
The main advantage over GTM is mobile compatibility. Ma Box RH works well on mobile, allowing agents to request leave from home without using a computer.
To connect, the same RH identifier used for GTM Extranet is employed, via the portal maboxrh.laposte.fr. In case of issues, dedicated support can be reached at [email protected]. The site also offers an accessible version for visually impaired agents, with audio support for the virtual keyboard.
Agent status and access rights: what changes depending on the contract
It is often assumed that all agents have access to the same features on both portals. In practice, the level of rights depends on the contractual status.
- Permanent employees and CDI generally have full access to both platforms, with all leave and working time features.
- CDD and apprentices may see certain sections grayed out or inaccessible depending on local configuration, particularly on Ma Box RH.
- Temporary workers often have very limited access to Ma Box RH (view only), while the management of their schedules remains exclusively in GTM.
These discrepancies are not documented in official help resources, which creates confusion. If a feature seems to be missing, the instinct is to check with their manager or local HR rather than looking for a technical bug.
GTM or Ma Box RH: criteria for choosing based on the situation
Rather than an abstract comparison table, here are concrete cases that guide users towards one portal or the other:
- Check a schedule or clocking for the week: GTM Extranet, preferably on a fixed workstation.
- Request or cancel leave, check a balance: Ma Box RH, accessible from a mobile device.
- Update an address or bank details: Ma Box RH, personal data section.
- Report an overtime error: GTM Extranet, then validation by the manager.
- Consult an HR document (certificate, payslip): Ma Box RH.
The right reflex is to think by type of procedure rather than by habit. Many agents default to opening GTM when the procedure they are looking for has migrated to Ma Box RH, and vice versa.
Authentication and security: recent developments in the La Poste portal
The two platforms share the same authentication framework, based on the RH identifier. La Poste began rolling out a two-factor authentication mechanism on its online portals starting November 2025. This means that an additional code may be requested in addition to the usual password during login.
For now, the login guides for Ma Box RH and GTM still primarily mention the classic identifier/password pair. Ensuring that your professional email address is up to date becomes even more useful: this is the channel through which reset codes and, eventually, validation codes will be sent.
The distinction between the two portals is not a definitive choice. Users switch from one to the other based on the current procedure, using the same identifiers. The real time-saving comes from knowing in advance which portal contains the sought information, without navigating blindly between two interfaces that do not always communicate with each other.