c# - sendgrid多个收件人c#

Question

我正在使用此代码从 Web 应用程序发送电子邮件。只有一个收件人没有问题。我研究过使用来自 https://sendgrid.com/docs/Integrate/Code_Examples/v3_Mail/csharp.html 的相同技术向多个收件人发送电子邮件。我试过用逗号分隔的字符串作为 destinatario(参见代码中的参数)，即 you@example.com, she@example.com, he@example.com 但 SendGrid 只接受第一个收件人。我也尝试使用数组，但结果是相似的，SG 只接受最后一个收件人。传递收件人列表的正确方法是什么？

public class email
{
    public void enviar(string destinatario, string asunto, string contenido)
    {
        Execute(destinatario, asunto, contenido).Wait();
    }

    static async Task Execute(string destinatario, string asunto, string contenido)
    {
        string apiKey = "SG...............";
        dynamic sg = new SendGridAPIClient(apiKey);

        Email from = new Email("someone@example.com");
        string subject = asunto;
        Email to = new Email(destinatario);
        Content content = new Content("text/plain", contenido);           

        Mail mail = new Mail(from, subject, to, content);
        dynamic response = await sg.client.mail.send.post(requestBody: mail.Get());
    }


}

Answer 1

您需要添加 个性化 列表。以下代码对我有用。

var apiKey = Environment.GetEnvironmentVariable("SENDGRID_API_KEY");
var client = new SendGridClient(apiKey);
var msg = new SendGridMessage()
{
    From = new EmailAddress("sender@email.com", "Sender Name"),
    Subject = "Subject",
    PlainTextContent = "Text for body",
    HtmlContent = "<strong>Hello World!",
    Personalizations = new List<Personalization>
    {
         new Personalization
         {
              Tos = new List<EmailAddress> 
              {
                   new EmailAddress("abc@email.com", "abc"),
                   new EmailAddress("efg@email.com", "efg")
              }
         }
     }
};

var response = await client.SendEmailAsync(msg);

更多详情请查看以下 Mail Send