As long as the Pro Lab Partner has integrated with Extra, you are free to choose! :) In your Extra account, click on Settings and then Profile to choose the Pro Print Lab partner you would like to use.
ShootDotEdit will carefully and prudently select Pro Print Lab partners as we move forward. So, stay tuned for new additions. Don't see a pro lab partner in our options that you would like to use? Please email firstname.lastname@example.org and tell us who you prefer!