Extensible and customizable Convergence delivers presence aware communication with click-to-collaborate, email, calendar and task management, SMS, attachment viewing and access to social networks. Integrated click-to-call, convert IM session to audio or video call; invite additional participants converting 1:1 call to a conference; Call hold and call transfer; Continue IM and email conversation while on audio/video call. Multiple calendars including ability to use natural language to enter appointments, delegation and sharing. Full featured address book, ability to view attachments in a easy to peruse manner. Find what you are looking for quickly. Integrated social experience, support for advertisements.