您可以使用MailDeFinition类。
这是您的用法：
MailDeFinition md = new MailDeFinition();
md.From = "test@domain.com";
md.IsBodyHtml = true;
md.Subject = "Test of MailDeFinition";
ListDictionary replacements = new ListDictionary();
replacements.Add("{name}", "Martin");
replacements.Add("{country}", "Denmark");
string body = "<div>Hello {name} You're from {country}.</div>";
MailMessage msg = md.CreateMailMessage("you@anywhere.com", replacements, body, new System.Web.UI.Control());
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