SendGrid 免费试用怎么申请？无需信用卡的多语言开发集成教程

pip install sendgrid

from sendgrid import SendGridAPIClient
from sendgrid.helpers.mail import Mail

message = Mail(
    from_email='sender@yourdomain.com',
    to_emails='recipient@example.com',
    subject='测试邮件：Python 集成 SendGrid',
    plain_text_content='这是一封通过 SendGrid API 发送的纯文本邮件',
    html_content='这是一封通过 SendGrid API 发送的 HTML 格式邮件'
)

try:
    sg = SendGridAPIClient(api_key='YOUR_API_KEY')
    response = sg.send(message)
    print(f'邮件发送成功！状态码：{response.status_code}')
    print(f'响应内容：{response.body}')
except Exception as e:
    print(f'发送失败：{str(e)}')

<dependency>
    <groupId>com.sendgridgroupId>
    <artifactId>sendgridartifactId>
    <version>4.9.5version>
dependency>

import com.sendgrid.Method;
import com.sendgrid.Request;
import com.sendgrid.Response;
import com.sendgrid.SendGrid;
import com.sendgrid.helpers.mail.Mail;
import com.sendgrid.helpers.mail.objects.Content;
import com.sendgrid.helpers.mail.objects.Email;

public class SendGridExample {
    private static final String API_KEY = System.getenv("SENDGRID_API_KEY");

    public static void main(String[] args) {
        Email from = new Email("sender@yourdomain.com", "发件人名称");
        Email to = new Email("recipient@example.com", "收件人名称");
        String subject = "Java 集成 SendGrid 测试邮件";
        Content content = new Content("text/plain", "这是 Java 发送的纯文本邮件内容");
        Mail mail = new Mail(from, subject, to, content);

        try {
            SendGrid sg = new SendGrid(API_KEY);
            Request request = new Request();
            request.setMethod(Method.POST);
            request.setEndpoint("mail/send");
            request.setBody(mail.build());
            Response response = sg.api(request);
            System.out.println("状态码：" + response.getStatusCode());
            System.out.println("响应体：" + response.getBody());
            System.out.println("响应头：" + response.getHeaders());
        } catch (Exception e) {
            System.err.println("发送邮件时发生错误：" + e.getMessage());
        }
    }
}

gem 'sendgrid-ruby'

config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
  address: 'smtp.sendgrid.net',
  port: ,
  user_name: 'apikey',
  password: ENV['SENDGRID_API_KEY'],
  domain: 'yourdomain.com',
  enable_starttls_auto: true
}

class UserMailer < ActionMailer::Base
  default from: 'notifications@yourdomain.com'

  def welcome_email(user)
    @user = user
    mail(to: user.email, subject: '欢迎加入我们的平台')
  end
end

UserMailer.welcome_email(@user).deliver_now

npm install nodemailer nodemailer-sendgrid-transport

const nodemailer = require('nodemailer');

async function sendEmail() {
    const transport = nodemailer.createTransport({
        host: 'smtp.sendgrid.net',
        port: ,
        auth: {
            user: 'apikey',
            pass: process.env.SENDGRID_API_KEY
        }
    });

    const message = {
        from: '"系统通知" ',
        to: 'recipient@example.com',
        subject: 'Node.js 集成 SendGrid 测试邮件',
        text: '这是 Node.js 发送的纯文本邮件',
        html: '
这是 Node.js 发送的 HTML 格式邮件
'
    };

    try {
        const info = await transport.sendMail(message);
        console.log('邮件已发送：', info.messageId);
    } catch (error) {
        console.error('发送失败：', error);
    }
}

sendEmail();