Do you want to move all your emails and contacts from MS Outlook, Outlook Express, or Mozilla Thunderbird to your Gmail account? You can move all your emails quickly to Google Apps Gmail account, but moving them to vanilla Gmail Account is tricky.
This tutorial is about moving emails and contacts from desktop email clients to your vanilla Gmail account.
Note: To clear the confusion, Google Apps Gmail Account is an email address that ends with a custom domain name(e.g firstname.lastname@example.org) and vanilla Gmail Account is an email address that ends with Gmail domain(e.g email@example.com)
Open your Google Apps Gmail account’s Settings.
Now go to Forwarding And POP/IMAP tab and forward your incoming emails to your vanilla Gmail account as shown in the screenshot below.
This will also save a copy of your incoming email in this account by archiving it. If you don’t want to keep a copy in this account, then you can simply select Delete Mail’s Copy as you can see from the screenshot below.
Now click Save Changes to save all your settings.
Finally upload all our emails from desktop client to Google Apps Gmail Account using Google Gmail Uploader, you can find the process in details here.