退回 <[e-mail]> Gmail API 发送失败

Posted 2023-03-14

【中文标题】退回 <[e-mail]> Gmail API 发送失败

【英文标题】：Bounce <[e-mail]> Gmail API sending failure

【发布时间】：2015-10-11 13:55:54

【问题描述】：

我正在尝试使用 google API 发送电子邮件。我可以按照quickstart 说明使用client_secret.json 文件阅读电子邮件、通过誓言进行身份验证。我几乎可以发送电子邮件，但无法成功发送。

我的电子邮件正在退回，我无法指定要发送到的电子邮件（因此是[e-mail] 地址）。

下面的代码大部分都有效。我已经注释掉了有效的部分：（阅读电子邮件）。

代码：

<?php
require 'google-api-php-client/src/Google/autoload.php';

define('APPLICATION_NAME', 'Gmail API Quickstart');
define('CREDENTIALS_PATH', '~/.credentials/gmail-api-quickstart.json');
define('CLIENT_SECRET_PATH', 'client_secret.json');
define('SCOPES', implode(' ', array(
  Google_Service_Gmail::MAIL_GOOGLE_COM,
  Google_Service_Gmail::GMAIL_COMPOSE)
));

/**
 * Returns an authorized API client.
 * @return Google_Client the authorized client object
 */
function getClient() 
  $client = new Google_Client();
  $client->setApplicationName(APPLICATION_NAME);
  $client->setScopes(SCOPES);
  $client->setAuthConfigFile(CLIENT_SECRET_PATH);
  $client->setAccessType('offline');

  // Load previously authorized credentials from a file.
  $credentialsPath = expandHomeDirectory(CREDENTIALS_PATH);
  if (file_exists($credentialsPath)) 
    $accessToken = file_get_contents($credentialsPath);
   else 
    // Request authorization from the user.
    $authUrl = $client->createAuthUrl();
    printf("Open the following link in your browser:\n%s\n", $authUrl);
    print 'Enter verification code: ';
    $authCode = trim(fgets(STDIN));

    // Exchange authorization code for an access token.
    $accessToken = $client->authenticate($authCode);

    // Store the credentials to disk.
    if(!file_exists(dirname($credentialsPath))) 
      mkdir(dirname($credentialsPath), 0700, true);
    
    file_put_contents($credentialsPath, $accessToken);
    printf("Credentials saved to %s\n", $credentialsPath);
  
  $client->setAccessToken($accessToken);

  // Refresh the token if it's expired.
  if ($client->isAccessTokenExpired()) 
    $client->refreshToken($client->getRefreshToken());
    file_put_contents($credentialsPath, $client->getAccessToken());
  
  return $client;


/**
 * Expands the home directory alias '~' to the full path.
 * @param string $path the path to expand.
 * @return string the expanded path.
 */
function expandHomeDirectory($path) 
  $homeDirectory = getenv('HOME');
  if (empty($homeDirectory)) 
    $homeDirectory = getenv("HOMEDRIVE") . getenv("HOMEPATH");
  
  return str_replace('~', realpath($homeDirectory), $path);


// Get the API client and construct the service object.
$client = getClient();
$service = new Google_Service_Gmail($client);


$msg = new Google_Service_Gmail_Message(); 
$mime = rtrim(strtr(base64_encode("TEST MESSAGE OR SOMETHING"), '+/', '-_'), '=');
$msg->setRaw($mime); 

// Print the labels in the user's account.
$userId = 'me';

function sendMessage($service, $userId, $message) 
  try 
    $message = $service->users_messages->send($userId, $message);
    print 'Message with ID: ' . $message->getId() . ' sent.';
    // <----------- GET'S HERE AND THIS WORKS
    return $message;
   catch (Exception $e) 
    print 'An error occurred: ' . $e->getMessage();
  


try 
    sendMessage($service, $userId, $msg); 
 catch (Exception $Ex ) 
    echo $Ex->getMessage(); 

电子邮件回复（在我的 Gmail 收件箱中）：

An error occurred. Your message was not sent.

TEST MESSAGE OR SOMETHING Date: Tue, 21 Jul 2015 14:51:12 -0700 Message-Id: <

我什至不知道如何指定目标地址，例如[e-mail]。我真的找不到太多的文档方式。如果有人可以帮助我或指出我正确的方向，我将不胜感激。

【参考方案1】：

您需要将整个 RFC822 电子邮件信息放在原始字段中。所以在你有“TEST MESSAGE OR SOMETHING”的地方你应该有一个像这样的字符串：

To: [e-mail]
From: [e-mail]
Subject: this is my cool subject

here's a text/plain email, neato?

记住在行之间有\r\n，在标题和正文之间有两个。对于 php 而言，PEAR::Mail_Mime 似乎是构建此类 rfc822 MIME 电子邮件字符串的好库。

更多详情请见Sending Email。