Yes, users can manage their Mitel accounts online through the Mitel user portal. This portal provides a variety of features that allow users to handle their account settings, subscriptions, and services. Available functionalities may include updating personal information, managing call handling features, and accessing billing information. Additionally, some users may also have the capability to configure their devices and applications directly through the online portal. For specific instructions on how to access and navigate the portal, it is advisable to check the official Mitel website, particularly the support or resources section. This section generally offers helpful guides and documentation to assist users in making the most of their online account management experience.