If you use the general email app, you can add accounts. It will prompt you for the server information for your email provider. Here is a video tutorial on how to do it: How to set up an email account on Samsung Galaxy S3 (S III) - Phones 4u - YouTube

Actually there's a general email app called email that comes with ur phone

Probably install the app provided by ur email provider for free, I use yahoo mail for my email on my S3

Hello,

I have the S3, I have 3 accounts important (Professional) email, how to add them?

Can I have one with the core application and I do not wish to link my professional addresses with gmail.

Thank you