Mandrill example

gistfile1.txt

var emailMessage = new EmailMessage
{
    to = new List<EmailAddress>() { new EmailAddress() { email = model.Email, name = model.ShippingName } },
    track_clicks = true,
    track_opens = true
};

emailMessage.AddGlobalVariable("shipping_name", model.ShippingName.EmptyIfNull());
emailMessage.AddGlobalVariable("base_url", GetBaseUrl());
emailMessage.AddGlobalVariable("address1", model.Address1.EmptyIfNull());
emailMessage.AddGlobalVariable("address2", model.Address2.EmptyIfNull());
emailMessage.AddGlobalVariable("city", model.City.EmptyIfNull());
emailMessage.AddGlobalVariable("state", model.State.EmptyIfNull());
emailMessage.AddGlobalVariable("zipcode", model.ZipCode.EmptyIfNull());

var mandrillApi = new MandrillApi(ConfigurationManager.AppSettings["MandrillApiKey"]);
mandrillApi.SendMessage(emailMessage, templateName, templateContents);