Split Storage is a free tool that splits Outlook storages into smaller parts using PST files. Just specify storage, target folder for PST files, each file’s maximum size, and it will divide mailbox\any other storage into several parts. It is also possible to split storages by year.

Remove Duplicate Messages is a free tool that removes or deletes duplicate messages in Outlook folders. It can find duplicates across folders and storages. The whole operation is completely safe, because you can always reverse the removal action. It provides Outlook add-in

PCVITA Express Migrator for Google Apps is a solution to migrate email data from Outlook to Google Apps. The software had been popular owing to its user-friendly nature, which is now augmented further.

Google Apps Migration for Microsof Outlook is a desktop utility that lets Microsoft Outlook users import your existing mail, personal contacts, and calendar events from a Microsoft Exchange account or PST file into Google Apps account. This tool is recommended by Google Apps. With this tool, you can perform a user driven individual selective migration of your inbox, sent items, calendar and contacts from Microsoft Outlook into Google Apps.

You can use an email client to conveniently access your Gmail from your computer. You can retrieve your Gmail messages, including Google Apps Email, with a client or device that supports IMAP, like Microsoft Outlook. To set up your Microsoft Outlook 2007 client to work with Gmail, follow the instructions. if you are a Google Apps user, please follow the default instructions unless otherwise noted, replacing ‘your_domain.com’ with your actual domain name.