API Mailchimp - Mandrill email sending system


Job Description

For this job I seek somebody experience in API and PHP.
I need advice how to fix the email sending mechanism in my PHP application.

We use Mailchimp API for emails - all the outgoing emails are going via Mandrill and then the sender id looks like:
From: mysite.com [mailto:info@mail64.us4.mandrillapp.com] On Behalf Of mysite.com

I do want to stay using Mandrill but I want the sender to look like:

I think it has something to do with the document: http://mandrillapp.com/api/docs/senders.html

The tasks will be:
1/ asses if Mandrill can send emails showing info@mysite.com
2/ explain in few sentences what would need to change in the code and where to achieve it