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Mailjet Emails are not being delivered to certain contacts.

Contacts have unsubscribed from your mailing list.

Understanding Mailjet: A Powerful Email Communication API

Mailjet is a robust email communication API provider that allows developers to send, receive, and track emails effortlessly. It is widely used for transactional emails, marketing campaigns, and newsletters. With its comprehensive API, Mailjet offers seamless integration into applications, enabling businesses to manage their email communications effectively.

Identifying the Symptom: Email Delivery Issues

One common issue that developers encounter when using Mailjet is the failure of emails to be delivered to certain contacts. This can manifest as a noticeable drop in email open rates or direct feedback from users who are not receiving expected communications.

Exploring the Issue: Error Code MJ-024

Error code MJ-024 is associated with attempts to send emails to contacts who have unsubscribed from your mailing list. This error prevents emails from being delivered to these contacts, ensuring compliance with email marketing regulations and maintaining a positive sender reputation.

Why Unsubscribed Contacts Cause Issues

When a contact unsubscribes, they are indicating that they no longer wish to receive communications from your organization. Continuing to send emails to these contacts can lead to complaints, spam reports, and potential blacklisting of your email domain.

Steps to Resolve the Issue: Ensuring Compliance and Delivery

To resolve the MJ-024 error and ensure your emails are delivered successfully, follow these steps:

1. Verify Your Contact List

  • Regularly update your contact list to remove unsubscribed contacts. You can use Mailjet's Contact List API to manage your lists effectively.
  • Ensure that your application checks the subscription status of each contact before sending emails.

2. Implement Subscription Management

  • Provide clear options for users to manage their subscription preferences. This can be done through a subscription widget or a dedicated preferences center.
  • Use Mailjet's Manage Contact API to update subscription statuses in real-time.

3. Monitor and Audit Your Email Campaigns

  • Regularly review your email campaign reports to identify patterns or issues with delivery. Mailjet provides detailed analytics that can help you understand your email performance.
  • Set up alerts for any significant drops in delivery rates or increases in unsubscribe rates.

Conclusion: Maintaining a Healthy Email List

By ensuring that you are not sending emails to unsubscribed contacts, you can maintain a healthy email list and improve your overall email deliverability. Regularly auditing your contact lists and implementing robust subscription management practices are key to avoiding the MJ-024 error and ensuring successful email communications.

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