
Select ‘Import from another program or file’ and press ‘Next’. In the ‘Import a File’ window, scroll down and choose the “Personal Folder File” option and press ‘Next’.

In the ‘Import Personal Folders’ window, specify the location of your .pst file. Choose how you would like duplicates to be handled and press ‘Next’.

Now, choose what you want to import. In order to import everything you have stored in Outlook (Contacts, Calendar, etc.), choose the top-level folder that is (most likely) listed as “Personal Folders”, check the box that says “Include subfolders”, and have the items import into the same folder in your Frontgate mailbox.

Click ‘Finish’, and the import process will begin, after which your old mail (and anything else you chose to import) will be in your Frontgate mailbox.
NOTE: Before performing the above procedure, please check the size of the .pst file, and the remaining space in your Frontgate mailbox, to ensure that importing the .pst file will not result in your mailbox reaching its size limit.