I simply wanted to send some emails programmatically using .NET Core v1.1 with attachments.
Perhaps I should have chosen a different route, however I had already signed up for a
mailgun account as it seemed like that would be the quickest and easiest way to do it.
Perhaps it was... but it certainly wasn't very quick, and wasn't exactly easy;
atleast not until I figured it out. Now it seems super quick, and super easy.
I hope this helps someone save some time. Peace.
public static void SendEmailWithAttachement
(string emailTo, string emailSubject, string emailText, byte[] attachmentByteArray, string attachmentFileName)
{
// the domain name you have verified in your Mailgun account
const string DOMAIN = "mg.mynotsosupersecretdomain.com";
// your API Key used to send mail through the Mailgun API
const string API_KEY = "key-mysupersecretkey";
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Basic", Convert.ToBase64String(UTF8Encoding.UTF8.GetBytes("api" + ":" + API_KEY)));
using (var content = new MultipartFormDataContent())
{
var values = new[]
{
new KeyValuePair<string, string>("from", "Jimmy Neutron <Jimmy.Neutron@gmail.com>"),
new KeyValuePair<string, string>("to", emailTo),
new KeyValuePair<string, string>("subject", emailSubject),
new KeyValuePair<string, string>("text", emailText)
};
foreach (var keyValuePair in values)
{
content.Add(new StringContent(keyValuePair.Value), keyValuePair.Key);
}
var fileContent = new ByteArrayContent(attachmentByteArray);//(System.IO.File.ReadAllBytes(fileName));
fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
Name = "attachment",
DispositionType = "form-data",
CreationDate = DateTime.Now,
Size = attachmentByteArray.Length,
FileName = attachmentFileName,
};
content.Add(fileContent);
var requestUri = "https://api.mailgun.net/v3/" + DOMAIN + "/messages";
var result = client.PostAsync(requestUri, content).Result;
//TODO do something with the result...
//like log it... or something dude.
}
}
}
