Does Google/Gmail have migration features?

I want to create a new gmail for school (my other one is not very professional), and was wondering if i will just lose all of the 800+ emails in my old inbox. I would prefer not to forward all of those emails because i use mail.app to catalog all of those and sent fields from me are a little strange to work with.

Basically, can you export/import one google account (including calenders, contacts, etc.) into another?