How to Fix a Blacklisted Email or Blacklisted IP Address

Have you ever tried to send an email only to have it bounce back with an error message saying that your email or IP address is blacklisted? This can be a frustrating and confusing experience, especially if you’re not sure what a blacklisted email or IP address means or how to fix it.

In this article, we’ll explain what it means to have a blacklisted email or IP address and provide you with some steps you can take to fix the issue and get your email flowing again.

What is a Blacklisted Email?

A blacklisted email is an email address that has been identified as a source of spam or unwanted messages by internet service providers (ISPs) or email providers. When an email is sent from a blacklisted email address, it is often blocked or sent to the recipient’s spam folder.

There are several reasons why an email address might be blacklisted, including:

  • Sending a high volume of emails in a short period of time
  • Using an email address that has been previously marked as spam by a recipient
  • Using a purchased or rented email list
  • Sending emails with spammy subject lines or content

What is a Blacklisted IP Address?

An IP address is a numerical label assigned to every device connected to the internet. A blacklisted IP address is an IP address that has been identified as a source of spam or unwanted messages by ISPs or email providers. When an email is sent from a device with a blacklisted IP address, it is often blocked or sent to the recipient’s spam folder.

There are several reasons why an IP address might be blacklisted, including:

  • Sending a high volume of emails in a short period of time
  • Using an IP address that has been previously marked as spam by a recipient
  • Using a shared IP address that has been previously used to send spam
  • Sending emails with spammy subject lines or content

How to Fix a Blacklisted Email

If your email address has been blacklisted, here are some steps you can take to fix the issue:

  1. Identify the cause of the blacklisting. If you’re not sure why your email address was blacklisted, try to identify any recent changes or actions that might have triggered the blacklisting. This could include sending a large volume of emails, using a purchased or rented email list, or sending emails with spammy subject lines or content.

  2. Use a reputable email service provider. If you’re sending emails through a free email service like Gmail or Yahoo, consider switching to a paid email service provider that has stricter rules against spamming. These providers often have systems in place to prevent their servers from being used to send spam.

  3. Clean your email list. If you have a large email list, it’s possible that some of the addresses on your list are no longer active or have been marked as spam. Go through your list and remove any inactive or spammy addresses to reduce the chances of your emails being flagged as spam.

  4. Use double opt-in for your email list. Double opt-in is a process where a potential subscriber must confirm their subscription by clicking on a link in an email before they are added to your email list. This helps ensure that only people who are genuinely interested in receiving your emails are added to your list, reducing the chances of your emails being marked as spam.

How to fix a blacklisted IP address

  1. Determine the cause of the blacklisting. If you’re not sure why your IP address was blacklisted, try to identify any recent changes or actions that might have triggered the blacklisting. This could include sending a high volume of emails, using a shared IP address that has been previously used to send spam, or sending emails with spammy subject lines or content.
  2. Check your email sending practices. Make sure that you are following best practices for email sending, such as using a reputable email service provider, cleaning your email list, using double opt-in for your email list, and avoiding spammy subject lines or content.
  3. Request a delisting from the blacklisting service. If you believe that your IP address was blacklisted in error, you can try contacting the blacklisting service and requesting a delisting. In order to do this, you may need to provide information about your email sending practices and demonstrate that you are following best practices to prevent spam.
  4. Use a different IP address. If you are unable to get your IP address delisted, or if you don’t want to go through the process of requesting a delisting, you can try using a different IP address to send your emails. This could mean switching to a different internet service provider or using a different server to send your emails.
  5. Monitor your email sending practices. Once you have fixed the issue with your blacklisted IP address, it’s important to continue monitoring your email sending practices to ensure that you don’t get blacklisted again in the future. This could include regularly cleaning your email list and following best practices for email sending.

What are some email best practices?

Here are some best practices to follow when sending emails to avoid having your emails flagged as spam:

  1. Use a clear and concise subject line. Avoid using spammy words or phrases in your subject line, such as “Free,” “Earn money,” or “Congratulations.”
  2. Use a reputable email service provider. Choose an email service provider that has strict rules against spamming and that has systems in place to prevent their servers from being used to send spam.
  3. Clean your email list. Remove inactive or spammy addresses from your email list to reduce the chances of your emails being flagged as spam.
  4. Use double opt-in for your email list. Require potential subscribers to confirm their subscription by clicking on a link in an email before they are added to your list.
  5. Personalize your emails. Use the recipient’s name in the subject line and body of the email to make it more likely that they will open and engage with your email.
  6. Include an unsubscribe link. Make it easy for recipients to unsubscribe from your emails if they no longer wish to receive them.
  7. Use a consistent “From” name and address. Choose a “From” name and address that is familiar to your recipients and use it consistently in all of your emails.
  8. Monitor your sending frequency. Don’t send emails too frequently or too infrequently. Aim for a sending frequency that is appropriate for your audience.
  9. Use a clear and recognizable “Reply-To” address. Make it easy for recipients to reply to your emails by using a clear and recognizable “Reply-To” address.

Best Blacklist Removal Tools

Here are some free tools that you can use to help remove your email from the blacklist:

  1. MXToolBox: This tool allows you to check if your IP address or domain is listed on any blacklists, as well as provide you with information on how to request a delisting.
  2. MX Lookup: This tool allows you to check the status of your domain or IP address on various blacklists and provides information on how to contact the blacklisting service to request a delisting.
  3. Blacklist Check: This tool allows you to check if your IP address or domain is listed on a number of different blacklists.
  4. IP Void: This tool allows you to check if your IP address is listed on various blacklists and provides information on how to request a delisting from each blacklist.

Keep in mind that the process for requesting a delisting from a blacklist can vary depending on the blacklisting service. Some services may require you to provide information about your email sending practices or may charge a fee for delisting.

Heather Valencia

Heather Valencia

Web Designer & Developer | Owner

I’ve been developing WordPress websites as a freelance web designer in Spokane since 2010. My passion for building websites is as strong as the dedication I put forth in strengthening my client relationships.

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