Hello @Susan Berland,
Welcome to the Microsoft forum for technical support.
Based on your description, I will answer the four questions you raised one by one below:
- You can link an Exchange account to a Gmail address. If you are using Exchange Online (part of Microsoft 365), you can forward email to a Gmail address or configure Gmail to retrieve email from an Exchange account using POP or IMAP.
- If you cancel your Exchange account, you will not be able to access any data stored specifically in that account, including contacts, calendars, and notes, unless you have backed them up or synchronized them elsewhere. Before canceling, you should export all important data. For contacts, you can use the "Export to .csv or .pst file" option in Outlook. For calendars and memos, you may need to export them separately or make sure they are synchronized to other services.
- The problem of duplicate contacts and the problem of contacts being deleted when you delete them are usually the result of synchronization errors. Before trying to delete duplicates, make sure Outlook is updated and check the synchronization settings when using multiple devices or services. It is also wise to back up your contacts before making changes. If your contacts are still duplicated, it is recommended that you go to the Outlook.com forum for more professional help.
- When you connect Gmail to Outlook, it does not automatically include your Outlook contacts, calendars, and notes. To avoid losing this information, make sure to back it up. For contacts, you can export them as mentioned earlier. For calendars and notes, you can export them or sync them with other services you plan to continue using. If you are integrating with Gmail, according to my research, Google does have an option to import calendars and contacts, so you can transfer them to Google's services to ensure that you don't lose any information. However, Gmail is not a Microsoft product, but a third-party service. It is recommended that you consult professionals of related products for specific steps.
Please feel free to contact me if you have any queries.
Best,
Jake Zhang