Sample code for 30+ languages & platforms
.NET Core C#

Add File Attachments to an Email

Demonstrates how to add one or more file attachments to an email.

Chilkat .NET Core C# Downloads

.NET Core C#
bool success = false;

Chilkat.Email email = new Chilkat.Email();

email.Subject = "This is a test";
email.Body = "This is a test";
email.From = "support@chilkatsoft.com";
success = email.AddTo("Chilkat Admin","admin@chilkatsoft.com");

// To add file attachments to an email, call AddFileAttachment
// once for each file to be attached.  The method returns
// the content-type of the attachment if successful, otherwise
// returns cknull
string contentType;

contentType = email.AddFileAttachment("something.pdf");
if (email.LastMethodSuccess != true) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

contentType = email.AddFileAttachment("something.xml");
if (email.LastMethodSuccess != true) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

contentType = email.AddFileAttachment("something.zip");
if (email.LastMethodSuccess != true) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

success = email.SaveEml("email.eml");
if (success == false) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

Debug.WriteLine("Saved EML!");