Set Email Sending Limits in Marketing → Mail (OpenCart 3.x Cron Throttling Fix)

If your hosting provider limits the number of emails you can send per hour or per day, this extension is for you:
Marketing Mail Sending Limit (Email Throttling) for OpenCart 3.x

OpenCart’s Marketing → Mail feature doesn’t include built-in throttling, so exceeding your email quota may result in messages silently disappearing — without any logs or error messages.

This extension solves that problem by adding a queue system and a smart cron-based delivery mechanism.
- You can define how many emails can be sent per interval
- Set how often your quota resets
- Automatically generate the cron command
- View logs of sent emails

Emails are no longer sent all at once. Instead, they are processed gradually based on your configured limits — ensuring your campaigns stay within hosting or SMTP provider restrictions.

Check it out on the marketplace:
Marketing Mail Sending Limit (Email Throttling) for OpenCart 3.x

Let me know if you have any questions or need assistance!