在C#中通过电子邮件发送动画GIF

using System.Net.Mail;

class Program
{
    static void Main(string[] args)
    {
        MailMessage mail = new MailMessage();
        mail.From = new MailAddress("sender@example.com");
        mail.To.Add("recipient@example.com");
        mail.Subject = "动画GIF邮件";
        mail.Body = "这是一封包含动画GIF的邮件。";

        Attachment attachment = new Attachment("path/to/animation.gif");
        mail.Attachments.Add(attachment);

        SmtpClient smtpClient = new SmtpClient();
        smtpClient.Host = "smtp.example.com";
        smtpClient.Port = 587;
        smtpClient.Credentials = new NetworkCredential("username", "password");
        smtpClient.EnableSsl = true;

        smtpClient.Send(mail);
    }
}