Sync Outlook with Gmail IMAP account to upload Outlook
contacts, emails and calendars to Gmail Id. A manual procedure for how to
import an Outlook PST file into Gmail account
is elaborated with related screenshots.
You just need to do the following task which helps migrating PST files
to Gmail account.
The whole task to import Outlook emails to Gmail is divided
into 2 sections so far you can easily do the job without any confusion.
1) First Half Section
of the Task:
Before moving to import process,
enable IMAP for Gmail account and configure that Gmail account with Outlook
2013, 2010 or any older edition by using IMAP server. Check how to configure Gmail in Outlook using IMAP.

