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How to avoid MailChannels Blocks

Navigating the intricacies of email communication demands vigilance to prevent disruptions. In this article, we unravel the keys to sidestepping MailChannels blocks, ensuring seamless email delivery.

Understanding the common pitfalls and adopting proactive measures is crucial for businesses and individuals relying on email communication. Whether you’re a seasoned user or new to the email landscape, these insights will empower you to maintain a consistent and reliable email flow. Discover practical strategies to steer clear of MailChannels blocks and safeguard the uninterrupted exchange of crucial information through your email channels.

As you’re probably aware, hosting companies relay millions of emails every day on behalf of their customers and employ sophisticated tools to ensure secure and reliable delivery. At 1-grid, a service called MailChannels automatically detects and blocks the sending of spam, phishing and other abusive types of email.



 There are numerous reasons why MailChannels may flag an email as a risk. A common issue is the use of subject lines that are found in widespread spam campaigns, for example, variations of greetings such as re: fwd: hello, hi, etc.

Below please find a list of  tips to below to improve the mail reputation:



  • Don’t write emails without a subject line.


  •  Don’t write subject lines ALL IN CAPS.


  • Don’t plea with people to “Open Me!”


  • Don’t deceive readers with a false promise.


  • Don’t give away everything in your subject line (Do not make your subject line too long).


  • Don’t use one word – like “Hi!” – as your subject line.


  • Skip the punctuation!!!


  • Don’t add Re: to your subject line to deceive readers.


  • Avoid using blacklisted URLs, suspicious/ bad attachments in the mails.

Frequently asked questions: 

  1. How can I proactively prevent MailChannels blocks?

To avoid MailChannels blocks, maintain a clean and reputable sender reputation. Ensure that your email content is relevant, use double opt-in methods for subscriber lists, regularly clean your email list to remove inactive or invalid addresses, and promptly address any spam complaints. Additionally, monitor your email delivery reports and take corrective actions if you notice unusual patterns. By following these proactive measures and staying informed about email best practices, you can significantly reduce the likelihood of encountering MailChannels blocks.

Updated on November 14, 2023

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