Google offers a free web-based e-mail service called Gmail. Small businesses may prefer to have their employees access their Gmail e-mail account from the standalone e-mail program Outlook Express. Use Outlook with G Suite. You can use G Suite Sync for Microsoft Outlook (GSSMO) to let users manage their G Suite mail, calendar, and contacts in Outlook. Your users can access their Gmail messages in Outlook using the IMAP protocol.
Note: Features and information in this guide apply to Outlook Calendar as available through Office 365.