flutter - 如何通过 Flutter web 直接发送电子邮件

Question

我正在构建一个 flutter 网络我必须通过电子邮件将表单数据发送到我的 Gmail 电子邮件地址，我该怎么办。请帮我。
我有用户 "mailer 3.0.4"和 flutter_email_sender: ^2.2.2
但是他们两个都不起作用......
这是我的代码:

  // Perform login or signup
  Future<void> _validateAndSubmitForInformationForm() async {
    print('1');
    final MailOptions mailOptions = MailOptions(
      body: 'a long body for the email <br> with a subset of HTML',
      subject: 'the Email Subject',
      recipients: ['bc160201844@vu.edu.pk'],
      isHTML: true,
      bccRecipients: ['bc160201844@vu.edu.pk'],
      ccRecipients: ['bc160201844@vu.edu.pk'],
//      attachments: [
//        'path/to/image.png',
//      ],
    );
    print('3');

    await FlutterMailer.send(mailOptions);
    print('2');
  }

Answer 1

您可以使用 SendGrid 之类的东西从 flutter mobile 发送电子邮件，内容如下:抱歉格式错误。

import 'package:http/http.dart' as http;

class SendGridUtil {
  static sendRegistrationNotification(String email) async {
    Map<String, String> headers = new Map();
    headers["Authorization"] =
        "Bearer $$$SENDGRIDAPIKEY$$$";
    headers["Content-Type"] = "application/json";

    var url = 'https://api.sendgrid.com/v3/mail/send';
    var response = await http.post(url,
        headers: headers,
        body:
            "{\n          \"personalizations\": [\n            {\n              \"to\": [\n                {\n                  \"email\": \"jerrod@liftaixxx.com\"\n                },\n                {\n                  \"email\": \"darran@gmailxxx.com\"\n                }\n              ]\n            }\n          ],\n          \"from\": {\n            \"email\": \"app@liftaixxx.com\"\n          },\n          \"subject\": \"New user registration\",\n          \"content\": [\n            {\n              \"type\": \"text\/plain\",\n              \"value\": \"New user register: $email\"\n            }\n          ]\n        }");
    print('Response status: ${response.statusCode}');
    print('Response body: ${response.body}');
  }
}

要从 flutter web 发送电子邮件，您可以使用类似 firebase 云功能的功能 - 这是在 firebase auth 中创建新用户时执行的功能:

import * as functions from 'firebase-functions';
import * as admin from 'firebase-admin';
const sgMail = require('@sendgrid/mail')

admin.initializeApp(functions.config().firebase);

exports.sendWelcomeEmail = functions.auth.user().onCreate(user => {

console.log("User with email created: " + user.email);

sgMail.setApiKey("$$$SENDGRIDKEY$$$");
const liftAiMsg = {
  to: 'jerrod@liftaixxx.com',
  from: 'app@liftaixxx.com',
  subject: 'New user created',
  text: 'New user created with email: ' +user.email,
  html: "<strong>New user created with email:  "+user.email+"</strong>",
};

sgMail.send(liftAiMsg);

const customerMsg = {
  to: user.email,
  from: 'app@liftaixxx.com',
  subject: 'Welcome to LiftAI',
  text: 'Welcome to LiftAI',
  html: '<strong>Welcome to LiftAI!</strong>',
};

sgMail.send(customerMsg);


});