Getting sent messages using the Esendex .Net SDK - Full details here: http://developers.esendex.com/

GetSentMessages.cs

using com.esendex.sdk.sent;

...

const int pageNumber = 1;
const int pageSize = 20;

var sentService = new SentService(USERNAME, PASSWORD);
try
{
    var sentMessages = sentService.GetMessages(pageNumber, pageSize);
    foreach (var item in sentMessages.Messages)
    {
        Console.WriteLine("Message Id:{0}\nMessage:{1}\n\n", item.Id, item.Summary);
    }
}
catch (WebException ex)
{
    Console.Write(ex.Message);
}