Using the API, programmers can import E-mail from a vast, vast array of E-mail clients out there into the Gmail application of Google Apps.
Along with the API release from Google comes a new tool from LimitNone for you non-programmers currently using Microsoft Outlook. gMOVE: Outlook Migration allows users to pick-and-choose Outlook E-mails (either individual folders or your entire folder structure) to be imported into your Gmail account. This goes for Gmail OR Google Apps – including standard Google Apps accounts. Beautifully priced at $19.99 (limited time only,) this tool could save you loads of time and frustration.
LimitNone also offers a separate tool, gXFER, for transferring Gmail account settings including E-mail, contacts and calendar entries to your Google Apps account. This particular tool is absolutely free.
Google’s API Announcement: