Address mimemailversion is invalid in mail_postmark _addrecipient

A specific error!

The error "address mimemailversion is invalid" typically occurs when using the mail_postmark_addrecipient function in PHP, specifically when trying to add a recipient to a Postmark email.

Here are a few possible solutions to resolve this issue:

  1. Check the recipient email address: Make sure the email address you're trying to add as a recipient is valid and correctly formatted. Try using a different email address to see if the issue persists.
  2. Verify the Postmark API key: Ensure that your Postmark API key is correct and properly set up in your PHP script. You can check the Postmark documentation for more information on how to set up your API key.
  3. Check the mimemailversion parameter: The mimemailversion parameter is not a required parameter for the mail_postmark_addrecipient function. If you're passing an invalid value for this parameter, it could cause the error. Try removing or commenting out this parameter to see if the issue resolves.
  4. Update the Postmark PHP library: If you're using an older version of the Postmark PHP library, it might be causing the issue. Try updating to the latest version of the library to see if the problem resolves.
  5. Check for whitespace or special characters: Make sure there are no whitespace characters or special characters in the recipient email address or any other parameters you're passing to the mail_postmark_addrecipient function.

Here's an example of how you can modify your code to add a recipient to a Postmark email:

<?php
require 'postmark.php';

// Initialize the Postmark API client
$client = new PostmarkClient('YOUR_API_KEY');

// Create a new email
$email = new PostmarkEmail();
$email->setFrom('[email protected]');
$email->setSubject('Test email');

// Add a recipient to the email
$email->addRecipient('[email protected]');

// Send the email
$client->sendEmail($email);

If none of these solutions work, please provide more details about your code and the exact error message you're seeing, and I'll do my best to help you troubleshoot the issue.