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Why did I receive the error "Poor mailing list"?

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    "Poor Mailing List" means that too many of the messages you have submitted were rejected/bounced because the address you were sending to was invalid.  

    In an effort to protect your domain's reputation, and the reputation of our IP's when the percentage of bounced messages gets too high, your domain is automatically disabled.


    What should I do next?

    Here are a few things you will need to do before we can enable your account: 

    • Clean your mailing list and remove any addresses that are bouncing from that list. 
    • Create a support ticket and provide us with details about how you obtain the email addresses to which you are sending. If there is a signup form or web portal, please provide the link for review.

    In your support ticket please provide answers to the following questions as well:

    • What types of emails are you sending? (Please explain the nature of your business and why these emails are related).
    • Are all of your email addresses double-opt in? (This means that the user has requested your emails through sign-up and then confirmed via email that they want to receive your communication).

    You can find some additional information in our email best practices and in our article on how to lower your bounce rate.


    Need Support?

    Our Support Team here at Sinch Mailgun is happy to help! Reach out to us in the Support section of your Mailgun Control Panel, and we'll be with you shortly!