To make it easier for Lotus Notes users to switch to Google Apps; Google released a new tool “Google Apps Migration for Lotus Notes,” that migrates mail, calendar and contacts quickly and easily. Key features include:
-Easy deployment Centrally administered server side migration process, requires no user intervention.
-Users can continue to use Notes with any downtime, even during the migration process. After they're migrated, Gmail will open Notes links in Lotus Notes.
-Migrate multiple Global offices simultaneously or separately. Assign administration controls at the organization and the office level as needed.
-Trackable reports Centralized event logging to manage & monitor migration across any number of Domino servers and sites
Migration from Lotus Notes to Google Apps:
Download: Google Apps Migration for Lotus Notes
Source:→ Google Enterprise Blog