I’m stuck trying to send emails using the Gmail API in PHP. For some reason, my messages are bouncing back. Can anyone help me figure out what I’m doing wrong? Here’s a simplified version of my code:
$client = new Google_Client();
$client->setApplicationName('MyApp');
$client->setScopes(['https://www.googleapis.com/auth/gmail.send']);
$client->setClientId('my_client_id');
$client->setClientSecret('my_secret');
$client->setAccessType('offline');
$accessToken = 'my_access_token';
$client->refreshToken($accessToken);
$raw_message = "To: [email protected]\r\n";
$raw_message .= "From: [email protected]\r\n";
$raw_message .= "Subject: Test Email\r\n";
$raw_message .= "Content-Type: text/html; charset=utf-8\r\n\r\n";
$raw_message .= "<p>This is a test email.</p>";
$encoded_message = base64_encode($raw_message);
$message = new Google_Service_Gmail_Message();
$message->setRaw($encoded_message);
$gmail_service = new Google_Service_Gmail($client);
try {
$sent_message = $gmail_service->users_messages->send('me', $message);
echo 'Message sent. ID: ' . $sent_message->getId();
} catch (Exception $e) {
echo 'Error: ' . $e->getMessage();
}
Am I missing something important? Any tips would be greatly appreciated!
hey, had similar issues. make sure ur refresh token is valid n not expired. also, check if ur sending from the right email address. sometimes the API can be picky bout that. have u tried using the Gmail SMTP instead? might be easier to setup. good luck!
I’ve encountered similar challenges with the Gmail API. One crucial aspect often overlooked is proper Base64 encoding of the raw message. Try using base64_encode(strtr(base64_encode($raw_message), ‘+/’, ‘-_’)) instead of just base64_encode(). This ensures URL-safe encoding.
Another potential issue could be with the access token. Implement a token refresh mechanism that checks the token’s expiration before each API call. Store both access and refresh tokens securely.
Lastly, verify that your application has the necessary OAuth2 scopes. Sometimes, the ‘https://www.googleapis.com/auth/gmail.send’ scope alone isn’t sufficient. Consider adding ‘https://www.googleapis.com/auth/gmail.compose’ as well.
If problems persist, enable detailed API error logging and scrutinize the response headers for any specific error codes or messages from Google’s servers.
Having worked extensively with the Gmail API in PHP, I can spot a few potential issues in your code. First, make sure you’ve properly set up your Google Cloud project and enabled the Gmail API. Often, the problem lies in incorrect credentials or insufficient permissions.
One thing I’ve encountered is that the “me” parameter in the send method can be finicky. Try using the actual email address associated with the account instead.
Also, double-check your $accessToken. If it’s expired, you’ll need to implement a proper token refresh mechanism. I’ve found it’s better to store the refresh token and use that to generate new access tokens as needed.
Lastly, ensure your sender email matches the one authorized in your Google Cloud project. Mismatches here can cause silent failures.
If you’re still having trouble after checking these, I’d recommend enabling more detailed error logging. It’s saved me countless hours of debugging in similar situations.