A full e-mail flow is needed (8-12 e-mails) within 1 month. You will have to write all the e-mails. Examples of e-mails are sign up forms, promoting features on the website, regular updates and so on. You will need to make everything work in Mandrill & Mailchimp.
Please only reply if you are very experienced with Mailchimp & Mandrill and know exactly how this works. You should not only be able to make the e-mails yourself but also need to make reports and should be able to analyse the results and what changes are needed to have more responses.