Mozilla Messaging: conquering the enterprise?

Mozilla Foundation the people behind Firefox are launching a new Foundation Mozilla Messaging, their objective is to improve how people communicate on the Internet. Of course they will start with my favorite email client Thunderbird :

The initial focus for Mozilla Messaging is the development of Thunderbird 3, which will deliver significant improvements, notably integrated calendaring, better search and enhancements to the overall user experience.

If Thunderbird improve its collaboration features it will be great contender in the Enterprise Collaboration arena, watch out “Lotus Notes” and “Outlook”.