I need a designer to develop a customisable email template

Design details: Hello,

I would like to create a template email where I can customise the content with imagery and text. I simply need the frame to be designed. I have attached the digital assets as a guide of what we have, and how we would like it to look.

I current use Mailchimp - and would need to export the framework to external agencies for them to email on our behalf.

I would like to have our 'Performance' range header text in all of our headers. It would be good to have an area in the header for links to our site - 'Home' 'About' 'Performance' 'News' 'Contact' - Footer to include the red/orange colour from the "Feed - Compete - Rest - Repeat"

We can use the lifestyle shot of the rider with the horse for the background - I can supply the image(s).

A customisable area in the body so we can add a title, the product image and write some copy on it. We would like the flexibility of being able to add other supporting images etc.

Basically wanting a branded e-shot design as per any retailer brand - Joules, Crew Clothing, Fatface etc.
Target audience: Trade and Consumer
Messages to communicate through the design: New 'Performance' product launch for Dodson & Horrell.

Dodson & Horrell is ahead of the times, reinforcing number #1 position in equine feed.
Type of email needed: Newsletter
Ideas for the visual style: Please use the attached images attached. I can give the background images if this helps.
Website url: http://www.dodsonandhorrell.com
Website information: We are the leading equine feed manufacture in Europe
Extra notes: Needs to be responsive for phone, tablet and desktop