| Can forward call request to operator | |
| Certificates management | |
| Work with WebMail changes like new e-mail, reminders, events | |
| Shared structures between WebMail and WebAdmin | |
| Contacts management | |
| Contacts management | |
| Manage delegation | |
| Calendar Events, Exceptions, Recurrence | |
| Users' Rules for Filtering Messages | |
| Message Folders | |
| FreeBusy management | |
| Methods for integration with mobile devices and other supported platforms | |
| Work with mails | |
| Notes management | |
| Currently logged user manager | |
| Shared data structures without an interface | |
| Data structures shared among webmail API | |
| Tasks management |