Looking for any email server can integrated email marketing system of in the MS CRM 2013 system solutions?

Hello all,

I am working MS Dynamics CRM 2013, I want to use email marketing campaign in Dynamics CRM 2013.
Now, I am looking for any email server so that we can integrated email marketing system of in the CRM 2013 system solutions? Anyone please give us expert advise.

Thanks,
Vinh Ng