CompliantData backs up all emails, contacts, notes, tasks and calendar from Microsoft Outlook.
Please note that your Outlook backup file (PST format) is still subject to the file size limitations of your account. To clarify, this refers to the entire Outlook PST file itself and not the size of individual emails, notes, and contacts.
It is important that you check how large your Outlook file size is. For information on checking the size of your Outlook PST file, access information at the link below.