{"id":24024,"date":"2025-10-10T07:41:41","date_gmt":"2025-10-10T07:41:41","guid":{"rendered":"https:\/\/1-grid.com\/knowledge\/how-to-avoid-mailchannels-blocks\/"},"modified":"2025-10-10T07:55:22","modified_gmt":"2025-10-10T07:55:22","slug":"how-to-avoid-mailchannels-blocks","status":"publish","type":"ht_kb","link":"https:\/\/1grid.co.za\/knowledge\/how-to-avoid-mailchannels-blocks\/","title":{"rendered":"How to Avoid MailChannels Blocks\u00a0"},"content":{"rendered":"\n<p><strong><a href=\"https:\/\/www.mailchannels.com\/\">MailChannels<\/a> <\/strong>blocks protect the global email ecosystem from spam and abuse. While they can be frustrating, you can avoid MailChannels blocks by practicing good email hygiene, such as cleaning mailing lists, authenticating domains, avoiding spam-like content, and securing accounts.&nbsp;&nbsp;<\/p>\n\n\n\n<p>This guide will help empower you with how to avoid MailChannels blocks and take control of your sending reputation, and reduce <a href=\"https:\/\/1grid.co.za\/knowledge\/mailchannels-errors-codes\/\"><strong>MailChannels errors<\/strong><\/a> that affect email delivery.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"600\" src=\"https:\/\/1grid.co.za\/knowledge\/wp-content\/uploads\/2022\/02\/1-grid-Images-for-KB-Articles-1000-x-600-px-45.png\" alt=\"\" class=\"wp-image-33786\"\/><\/figure>\n<\/div>\n\n\n<div class=\"wp-block-ht-block-toc is-style-rounded htoc htoc--position-wide toc-list-style-plain\" data-htoc-state=\"expanded\"><span class=\"htoc__title\"><span class=\"ht_toc_title\">Table of Contents<\/span><span class=\"htoc__toggle\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\"><g fill=\"#444\"><path d=\"M15 7H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><path d=\"M15 1H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1zM15 13H1c-.6 0-1 .4-1 1s.4 1 1 1h14c.6 0 1-.4 1-1s-.4-1-1-1z\"><\/path><\/g><\/svg><\/span><\/span><div class=\"htoc__itemswrap\"><ul class=\"ht_toc_list\"><li class=\"\"><a href=\"#htoc-\">What Are MailChannels Blocks?&nbsp;&nbsp;&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-1\">Why Do MailChannels Blocks Happen?&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-1111\">How to Avoid MailChannels Blocks&nbsp;<\/a><ul class=\"ht_toc_child_list\"><li class=\"\"><a href=\"#htoc-11111\">1. Authenticate Your Domain&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111\">2. Clean Your Mailing Lists&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111111\">3. Use Best Sending Practices&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111111111\">4. Secure Your Account&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111111111111\">5. Monitor Your Sending Activity&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111111111111111\">6. Warm Up Email Sending&nbsp;<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#htoc-11111111111111111111111\">Tips to Improve Mail Reputation&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111111111111111111111\">When to Contact 1-grid Support&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111111111111111111111111\">FAQs&nbsp;&nbsp;<\/a><\/li><li class=\"\"><a href=\"#htoc-11111111111111111111111111111111111\">Additional Resources&nbsp;<\/a><\/li><\/ul><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-\"><strong>What Are MailChannels Blocks?&nbsp;&nbsp;&nbsp;<\/strong><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.mailchannels.com\/\"><strong>MailChannels<\/strong> <\/a>is a security service that protects email delivery by filtering out spam and malicious traffic. When it detects suspicious patterns, it blocks emails to protect the sender&#8217;s reputation and the receiving servers.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-1\"><strong>Why Do MailChannels Blocks Happen?&nbsp;<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-11\">Sending to invalid or inactive email addresses.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-high-spam-complaint-rates-from-recipients\">High spam complaint rates from recipients.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-missing-or-misconfigured-spf-dkim-or-dmarc-records\">Missing or misconfigured SPF, DKIM, or DMARC records.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-bulk-email-campaigns-without-warming-up-sending-volume\">Bulk email campaigns without warming up the sending volume.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-111\">Malware or compromised accounts are sending abusive traffic.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-1111\"><strong>How to Avoid MailChannels Blocks&nbsp;<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-11111\"><strong>1. Authenticate Your Domain<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111\">Enable <a href=\"https:\/\/1grid.co.za\/knowledge\/cpanel-how-to-setup-an-spf-record\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SPF<\/strong><\/a>, <a href=\"https:\/\/1grid.co.za\/knowledge\/cpanel-how-to-generate-a-new-dkim-record\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>DKIM<\/strong><\/a>, and <a href=\"https:\/\/1grid.co.za\/knowledge\/cpanel-how-to-add-dmarc-record\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>DMARC<\/strong><\/a> records in your DNS.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111\">These records prove that your emails are legitimate and prevent spoofing.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-11111111\"><strong>2. Clean Your Mailing Lists<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111111\">Use double opt-in to confirm subscribers.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-regularly-remove-invalid-or-bounced-email-addresses\">Regularly remove invalid or bounced email addresses.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111111\">Test your lists with verification tools before sending bulk campaigns.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-11111111111\"><strong>3. Use Best Sending Practices<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111111111\">Write clear, relevant subject lines and avoid spammy language (Example: \u201cFREE $$$\u201d, \u201cURGENT\u201d).&nbsp;<\/li>\n\n\n\n<li id=\"htoc-send-from-consistent-from-addresses\">Send from consistent \u201cFrom\u201d addresses.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111111111\">Don\u2019t send bulk to unverified or cold contacts.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-11111111111111\"><strong>4. Secure Your Account<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111111111111\">Use strong, unique passwords.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-update-your-operating-system-regularly\">Update your operating system regularly.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111111111111\">Run antivirus scans to detect malware.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-11111111111111111\"><strong>5. Monitor Your Sending Activity<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111111111111111\">Check bounce and complaint reports frequently.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-use-google-postmaster-tools-for-gmail-reputation-insights\">Use <strong><a href=\"https:\/\/gmail.com\/postmaster\/\" target=\"_blank\" rel=\"noreferrer noopener\">Google Postmaster Tools<\/a> <\/strong>for Gmail reputation insights.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111111111111111\">Review <strong><a href=\"https:\/\/1grid.co.za\/knowledge\/mailchannels-errors-codes\/\" target=\"_blank\" rel=\"noreferrer noopener\">MailChannels error messages<\/a> <\/strong>to spot early warning signs.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"htoc-11111111111111111111\"><strong>6. Warm Up Email Sending<\/strong>&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111111111111111111\">If sending large volumes, increase gradually over days\/weeks. We recommend sending no more than 100 a day initially and progressively building on this. &nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111111111111111111\">Sudden spikes can look suspicious to MailChannels.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-11111111111111111111111\"><strong>Tips to Improve Mail Reputation&nbsp;<\/strong><\/h2>\n\n\n\n<p>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 <strong>re: fwd: hello, hi, etc<\/strong>.&nbsp;<\/p>\n\n\n\n<p>Below, please find a list of &#8220;<strong>don&#8217;ts<\/strong>&#8221; to help you improve your mail reputation:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111111111111111111111\">Don\u2019t write emails <strong>without a subject line<\/strong>.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-don-t-write-subject-lines-all-in-caps\">Don\u2019t write <strong>subject lines in ALL IN CAPS<\/strong>.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-don-t-plea-with-people-to-open-me\">Don\u2019t <strong>plead <\/strong>with people to <strong>\u201cOpen Me!\u201d<\/strong>&nbsp;<\/li>\n\n\n\n<li id=\"htoc-don-t-deceive-readers-with-a-false-promise\">Don\u2019t<strong> deceive <\/strong>readers <strong>with a false promise<\/strong>.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-don-t-give-away-everything-in-your-subject-line-do-not-make-your-subject-line-too-long\">Don\u2019t <strong>give away everything in your subject line<\/strong> (Do not <strong>make your subject line too long<\/strong>).&nbsp;<\/li>\n\n\n\n<li id=\"htoc-don-t-use-one-word-like-hi-as-your-subject-line\">Don\u2019t <strong>use one word<\/strong> like \u201cHi!\u201d as your subject line.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-skip-the-punctuation\">Skip the <strong>punctuation!!!&nbsp;<\/strong><\/li>\n\n\n\n<li id=\"htoc-don-t-add-re-to-your-subject-line-to-deceive-readers\">Don\u2019t <strong>add Re:<\/strong> to your subject line to deceive readers.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111111111111111111111\">Avoid <strong>using blacklisted URLs<\/strong> or <strong>suspicious\/bad attachments<\/strong> in the mails.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-11111111111111111111111111\"><strong>When to Contact 1-grid Support&nbsp;<\/strong><\/h2>\n\n\n\n<p>If you\u2019ve followed these steps and still experience MailChannels blocks, contact our Support Team.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Provide the following (with screenshots, where possible):&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"htoc-111111111111111111111111111\">The exact error message.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-details-of-your-spf-dkim-dmarc-setup\">Details of your SPF\/DKIM\/DMARC setup.&nbsp;<\/li>\n\n\n\n<li id=\"htoc-1111111111111111111111111111\">Your sending history and mailing list verification steps.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-11111111111111111111111111111\"><strong>FAQs&nbsp;&nbsp;<\/strong><\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Will enabling SPF, DKIM, and DMARC stop MailChannels blocks completely?<\/strong><\/summary>\n<p id=\"htoc-111111111111111111111111111111\">No, but it significantly reduces the risk when combined with good sending practices.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Can MailChannels blocks happen if I only send small volumes?<\/strong><\/summary>\n<p id=\"htoc-1111111111111111111111111111111\">Yes, if the messages look suspicious or you send to invalid recipients.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>How can I check if my domain or IP is blacklisted?<\/strong><\/summary>\n<p id=\"htoc-11111111111111111111111111111111\">Use tools like <strong><a href=\"https:\/\/check.spamhaus.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">Spamhaus<\/a> <\/strong>or <a href=\"https:\/\/mxtoolbox.com\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>MXToolbox<\/strong><\/a> for blacklist checks.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>What\u2019s the most common reason for blocks?<\/strong><\/summary>\n<p id=\"htoc-111111111111111111111111111111111\"><strong><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-resolve-mailchannels-error-550-too-many-invalid-recipients\/\">Sending to invalid addresses or lists<\/a> <\/strong>with poor hygiene.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Can 1-grid remove my domain from MailChannels blocks?<\/strong><\/summary>\n<p id=\"htoc-1111111111111111111111111111111111\">1-grid can assist with appeals, but following best practices is the best prevention.<\/p>\n<\/details>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-11111111111111111111111111111111111\"><strong>Additional Resources&nbsp;<\/strong><\/h2>\n\n\n\n<p><a href=\"https:\/\/1grid.co.za\/knowledge\/?s=mailchannels&amp;ht-kb-search=1&amp;lang=\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>MailChannels FAQs<\/strong><\/a><br><a href=\"https:\/\/1grid.co.za\/knowledge\/blocked-via-mailchannels-due-to-spam\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Blocked via Mailchannels Due to Spam<\/strong><\/a>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/mailchannels-errors-codes\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>MailChannels Error Codes and How to Fix Them<\/strong><\/a><strong>&nbsp;<\/strong><br><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-resolve-mailchannels-error-550-too-many-invalid-recipients\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How to Resolve MailChannels Error 550 \u201cToo many invalid recipients\u201d<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/top-10-common-email-issues-and-how-to-resolve-them\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Top 10 Common Email Issues and How to Resolve Them<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/setting-up-email-in-outlook-via-windows-control-panel\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Setting Up Email in Outlook via Windows Control Panel<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-set-up-email-on-android-for-your-1grid-email-accounts\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How to Set Up Email on Android for Your 1-grid Email Accounts<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/settings-to-configure-your-1grid-email-accounts-across-devices\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Settings to Configure Your 1-grid Email Accounts Across Devices<\/strong><\/a><strong>&nbsp;&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/resolving-email-error-messages-when-sending-to-gmail-accounts\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Resolving Email Error Messages When Sending to Gmail Accounts<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-ip-blacklisting\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>What is IP Blacklisting?<\/strong><\/a>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-check-if-my-ip-is-blacklisted\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How Do I Check if My IP is Blacklisted?<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/spamtitan-how-to-blacklist-an-email-address-or-domain\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SpamTitan: How to Blacklist an Email Address or Domain<\/strong><\/a>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-email-spoofing\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>What Is Email Spoofing? How It Works and How to Protect Yourself&nbsp;<\/strong><\/a>&nbsp;&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-spot-a-scam-email\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How to Spot a Scam Email<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/?s=email+headers&amp;ht-kb-search=1&amp;lang=\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Email Headers FAQs<\/strong><\/a><br><a href=\"https:\/\/1grid.co.za\/knowledge\/?s=email&amp;ht-kb-search=1&amp;lang=\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Email FAQs<\/strong><\/a><br><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-enable-dkim-and-spf-on-your-mail-domain\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How to Enable DKIM and SPF on Your Mail Domain<\/strong><\/a><strong>&nbsp;<\/strong>&nbsp;<br><a href=\"https:\/\/1grid.co.za\/knowledge\/why-ssl-the-purpose-of-using-ssl-certificates\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Why SSL? The Purpose of Using SSL Certificates<\/strong><\/a><br><a href=\"https:\/\/1grid.co.za\/knowledge\/what-is-a-domain-name-server-dns\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>What is a Domain Name Server (DNS)?<\/strong><\/a><br><a href=\"https:\/\/1grid.co.za\/knowledge\/how-to-update-your-domains-nameservers-at-1-grid\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How to Update Your Domain\u2019s Nameservers at 1-grid<\/strong><\/a><strong>&nbsp;<\/strong><br><a href=\"https:\/\/1grid.co.za\/knowledge\/?s=spamtitan&amp;ht-kb-search=1&amp;lang=\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>SpamTitan FAQs<\/strong><\/a>&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"htoc-111111111111111111111111111111111111\"><strong>Need Additional Support?&nbsp;<\/strong><\/h2>\n\n\n\n<p><strong>We&#8217;re Here to <\/strong><a href=\"https:\/\/1grid.co.za\/knowledge\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Help<\/strong><\/a><strong>:<\/strong>&nbsp;<\/p>\n\n\n\n<p>Understanding MailChannels error codes and how to resolve them doesn\u2019t have to feel technical with this easy-to-reference guide. Stuck? Contact our Support Team for clarity and guidance (<a href=\"https:\/\/1grid.co.za\/contact-us\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>https:\/\/1grid.co.za\/contact-us\/<\/strong><\/a>). We&#8217;re ready to see how we can help!&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MailChannels blocks protect the global email ecosystem from spam and abuse. While they can be frustrating, you can avoid MailChannels blocks by practicing good email hygiene, such as cleaning mailing lists, authenticating domains, avoiding spam-like content, and securing accounts.&nbsp;&nbsp; This guide will help empower you with how to avoid MailChannels&#8230;<\/p>\n","protected":false},"author":21,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"ht-kb-category":[1173,1194],"ht-kb-tag":[120,142,1497,344,1496,480,597,598,935],"class_list":["post-24024","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-email","ht_kb_category-email-troubleshooting","ht_kb_tag-avoid","ht_kb_tag-blocks","ht_kb_tag-bounce-back","ht_kb_tag-email-hosting","ht_kb_tag-email-security","ht_kb_tag-how-to","ht_kb_tag-mailchannel","ht_kb_tag-mailchannels","ht_kb_tag-spam"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Avoid MailChannels Blocks\u00a0 - 1-grid Knowledge Base<\/title>\n<meta name=\"description\" content=\"Learn how to avoid MailChannels blocks and fix them through safe sending practices through our Outbound firewall.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/1grid.co.za\/knowledge\/how-to-avoid-mailchannels-blocks\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Avoid MailChannels Blocks\u00a0 - 1-grid Knowledge Base\" \/>\n<meta property=\"og:description\" content=\"Learn how to avoid MailChannels blocks and fix them through safe sending practices through our Outbound firewall.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/1grid.co.za\/knowledge\/how-to-avoid-mailchannels-blocks\/\" \/>\n<meta property=\"og:site_name\" content=\"1-grid Knowledge Base\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/1grid.co.za\/\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-10T07:55:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/1grid.co.za\/knowledge\/wp-content\/uploads\/2022\/02\/1-grid-Images-for-KB-Articles-1000-x-600-px-45.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@1grid_hosting\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/1grid.co.za\/knowledge\/how-to-avoid-mailchannels-blocks\/\",\"url\":\"https:\/\/1grid.co.za\/knowledge\/how-to-avoid-mailchannels-blocks\/\",\"name\":\"How to Avoid MailChannels Blocks\u00a0 - 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