How to check if an email was delivered using MailKit

I am using @jstedfast Mimekit/Mailkit library to send emails from my API. I want to know how to get the delivery status of each email. I tried overriding DeliveryStatusNotification to send notifications on Success:

public class DSNSmtpClient : SmtpClient
{
    public DSNSmtpClient()
    {
    }
    protected override string GetEnvelopeId(MimeMessage message)
    {
        return message.MessageId;
    }
    protected override DeliveryStatusNotification? GetDeliveryStatusNotifications(MimeMessage message, MailboxAddress mailbox)
    {
        return DeliveryStatusNotification.Success;
    }
}

I am able to send emails like this:

using (DSNSmtpClient dsnSmtpClient = new DSNSmtpClient())
{
    dsnSmtpClient.Connect(_emailCredentials.Value.SmtpServer, _emailCredentials.Value.Port, true);
    dsnSmtpClient.Authenticate(_emailCredentials.Value.UserName, _emailCredentials.Value.Password);
    dsnSmtpClient.Send(mimeMessage);
    dsnSmtpClient.Disconnect(true);
}

But I do not get any emails regarding delivery status(or anything) in my sender inbox.

I found some related links:

get the delivery status of email with mimekit/mailkit library

https://github.com/jstedfast/MailKit/issues/602

But they only got me this far.
What else do I need to do to see if an email was delivered or not?

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Answers:

Method 1

Answers:

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Method 1

Make sure that your SMTP server supports the DSN extension.

var supportsDsn = client.Capabilities.HasFlag (SmtpCapabilities.Dsn);

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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