Importing to 2nd gmail account.

Hi! I have two gmail accounts (1 old, 1 new). I would like to stop using the old one for email purposes, but I need to import all of my current saved emails/contacts/etc. into the new one so I can delete the old account. Is there another way to do this besides just forwarding every single email to the new one? I also have a lot of labels setup (with all the emails organized into them) that I would like to move over. I cannot find any info on google's support page for this. Thanks!