{"id":3866,"date":"2024-04-17T12:30:58","date_gmt":"2024-04-17T12:30:58","guid":{"rendered":"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-552-5-7-0-solved\/"},"modified":"2026-06-23T11:39:42","modified_gmt":"2026-06-23T11:39:42","slug":"how-to-fix-smtp-email-error-552-5-7-0-solved","status":"publish","type":"post","link":"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-552-5-7-0-solved\/","title":{"rendered":"SMTP Error 552 5.7.0: Content Rejected \u2014 Causes and How to Resolve It"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.warmy.io\/blog\/what-is-smtp-and-how-does-the-smtp-server-work\" target=\"_blank\" rel=\"noopener noreferrer\">Simple Mail Transfer Protocol<\/a> is an essential part of email communication. Once an email is written and sent, the SMTP server is responsible for forwarding and ensuring its secure reception.<\/p>\n\n\n\n<p>SMTP errors are part of a standardized response code system \u2014 every code tells you exactly why a message was accepted, deferred, or rejected. If you want to understand the full picture, <a href=\"https:\/\/www.warmy.io\/blog\/smtp-error-codes-and-messages\/\" target=\"_blank\" rel=\"noopener noreferrer\">Warmy\u2019s complete guide to SMTP error codes and messages<\/a> covers every code you\u2019re likely to encounter. This article focuses specifically on 552 5.7.0 and how to resolve it.<\/p>\n\n\n\n<p>SMTP Error 552 5.7.0 is a permanent rejection code sent by the receiving mail server when it refuses to accept your message. The &#8220;552&#8221; code means the message exceeds what the server allows, and &#8220;5.7.0&#8221; specifically points to a content policy violation \u2014 a failed security check, a blocked file type, or content that the server&#8217;s filters flag as a threat. This is different from a temporary deferral: a 552 error will not resolve itself on its own, and the message is not queued for retry. You need to identify and fix the underlying cause before the email can be delivered.<\/p>\n\n\n\n<p>The error surfaces across all major platforms. On Microsoft 365 \/ Outlook, you&#8217;ll typically see: &#8220;552 5.7.0 This message was blocked because its content presents a potential security issue.&#8221; On Gmail, the bounce reads: &#8220;552-5.7.0 Our system detected an illegal attachment on your message.&#8221; Yahoo Mail reports it as: &#8220;552 Message size exceeds maximum permitted.&#8221; Each platform applies its own policy rules, but the root causes \u2014 and the fixes \u2014 follow the same pattern.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Understanding SMTP Error 552 5.7.0<\/h2>\n\n\n\n<p>SMTP Error 552 5.7.0 occurs with email users who could be using one of the various email systems, or those tracking and correcting such failures on the administrator\u2019s side.<\/p>\n\n\n\n<p>Below is a brief overview of how this issue appears in common email systems and what it generally means.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An error message in Microsoft Outlook: \u201cServer error: \u2018552 5.7.0 This message was blocked because its content presents a potential security issue.\u201d<\/li>\n\n\n\n<li>In addition, Gmail\u2019s bounce-back from the server \u201c552-5.7.0 Our system detected an illegal attachment on your message. Please visit our guidelines.\u201d could look this way in their notification, such as<\/li>\n\n\n\n<li>Yahoo Mail: \u201cFailure Notice: 552 Message size exceeds maximum permitted\u201d.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Key reasons behind SMTP Error 552 5.7.0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Content policy violations<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Attachments and file types<\/h4>\n\n\n\n<p>The kinds of files that can be attached to emails are subject to stringent regulations on many email servers. Blocking executable files (.exe,.scr, etc.) is widespread practice because these files are frequently linked to harmful malware. Likewise, excessively big files may also result in rejections.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Spammy content<\/h4>\n\n\n\n<p>The server may automatically reject emails that seem to be spam. This can include emails with deceptive subject lines, an excessive number of links, or terms that are prohibited and frequently used in phishing or spam campaigns.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Formatting and structure<\/h4>\n\n\n\n<p>Rejections can also result from emails that are badly formatted or created in a way that sets off spam filters (such as base64 encoding in the message body). This includes utilizing specific HTML elements or styles that are frequently connected to unsolicited emails.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\ud83d\udca1 Pro Tip: Before sending any campaign, run your template through Warmy&#8217;s free <a href=\"https:\/\/www.warmy.io\/free-tools\/template-checker\" target=\"_blank\" rel=\"noopener noreferrer\">Template Checker<\/a>. It scans subject lines, body copy, and formatting for the exact patterns that trigger 552 5.7.0 rejections \u2014 spam words, excessive links, and HTML issues \u2014 and returns a spam score with specific fixes. The Chrome Extension lets you run this check directly inside Gmail before hitting send.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Security settings and concerns<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Virus and malware detection<\/h4>\n\n\n\n<p>Attachments are scanned by antivirus software on contemporary email servers to check for viruses and malware. To safeguard both the sender and the recipient from possible harm, the server will reject a message containing an attachment if it is deemed harmful. To further protect your email systems, follow this <a href=\"https:\/\/www.wiz.io\/academy\/what-is-api-security\" rel=\"noopener\" target=\"_blank\" rel=\"noopener noreferrer\">API security checklist<\/a> to secure integrations and prevent potential threats.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Errors with DMARC, SPF, and DKIM<\/h4>\n\n\n\n<p>These email authentication techniques are meant to confirm the sender\u2019s identity and stop email spoofing. Emails that don\u2019t follow these protocols may be denied because the receiving server won\u2019t be able to confirm that the message is from a reliable source.<\/p>\n\n\n\n<p><strong>\ud83d\udd16 Relevant Reading:<\/strong> <a href=\"https:\/\/www.warmy.io\/blog\/spf-dkim-and-dmarc-what-they-are-and-why-you-should-care\/\" target=\"_blank\" rel=\"noopener noreferrer\">SPF, DKIM, and DMARC: What They Are and Why You Should Care<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">IP reputation and blacklisting<\/h4>\n\n\n\n<p>Servers may automatically reject emails received from IP addresses that have been blacklisted as a result of prior malicious activity. This contains IPs that are well-known for harboring malware or for transmitting spam.&nbsp;<\/p>\n\n\n\n<p>Check if you are blacklisted for free <a href=\"https:\/\/www.warmy.io\/free-tools\/email-deliverability-test\" target=\"_blank\" rel=\"noopener noreferrer\">here.<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/warmy-blog-wordpress-bucket.s3.amazonaws.com\/wp-content\/uploads\/2024\/06\/22070553\/test-1.png\" alt=\"A website tool interface for testing email deliverability, showing fields to enter email addresses, a sample message, and a blue button labeled Check your email deliverability on a beige background.\" title=\"\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step-by-step solutions to resolve SMTP Error 552 5.7.0<\/h2>\n\n\n\n<p>The fix depends on which platform is rejecting your message. Below are specific steps for Gmail, Outlook, and Yahoo Mail \u2014 followed by technical configuration guidance that applies across all providers. For context on related 552 error variants, see <a href=\"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-552-solved\/\" target=\"_blank\" rel=\"noopener noreferrer\">SMTP Email Error 552 \u2013 How to Resolve [SOLVED]<\/a> for a broader overview of the 552 error family.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Gmail<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Verify email size.<\/strong> Make sure the combined size of your email and its attachments doesn\u2019t go above Gmail\u2019s 25 MB limit. If so, consider use links to Google Drive rather than straight attachments.<\/li>\n\n\n\n<li><strong>Examine the different types of attachments.<\/strong> Remove those that can be dangerous (scripts or executables, for example). Share files via reliable cloud storage services instead, and include a link in your email.<\/li>\n\n\n\n<li><strong>Check for malware. <\/strong>To prevent sending malicious files, scan your attachments with antivirus software before sending.<\/li>\n\n\n\n<li><strong>Check the content of the email.<\/strong> Steer clear of spammy elements like a lot of links, wording that is too promotional, or deceptive subject lines.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Outlook<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Modify email format.<\/strong> Make your email easier to read by eliminating any complicated HTML components or scripts that could be interpreted as suspicious.<\/li>\n\n\n\n<li><strong>Respect attachment policies.<\/strong> Verify that your files adhere to Microsoft\u2019s safety requirements by reviewing Outlook\u2019s attachment policies.<\/li>\n\n\n\n<li><strong>Employ email authentication.<\/strong> To increase deliverability and authenticate your emails, make sure your email account is properly configured with SPF, DKIM, and DMARC records.<\/li>\n\n\n\n<li><strong>Check server settings. <\/strong>To make sure you\u2019re in compliance with your hosting provider\u2019s sending policies, check the server settings or speak with them if you use Outlook with a custom domain.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Yahoo Mail<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Reduce email size. If your email exceeds Yahoo&#8217;s size limits, try compressing attachments or splitting your content into multiple emails.<\/li>\n\n\n\n<li>Check blacklists. Ensure your sending IP is not blacklisted. If it is, you may need to contact your ISP or use a different network to send your email.<\/li>\n\n\n\n<li>Avoid spam triggers. Refrain from using excessive bold or colored fonts, and ensure the email does not resemble common spam characteristics.<\/li>\n<\/ol>\n\n\n\n<p>\ud83d\udca1 Pro Tip: If you&#8217;re seeing 552 5.7.0 rejections specifically from Microsoft 365 \/ Exchange Online recipients, check your DMARC policy first. A <a href=\"https:\/\/www.warmy.io\/free-tools\/dmarc-generator\" target=\"_blank\" rel=\"noopener noreferrer\">DMARC policy<\/a> set to &#8220;p=reject&#8221; will cause Exchange to block messages that fail alignment \u2014 even if SPF and DKIM pass individually. Use Warmy&#8217;s free DMARC Generator to build a correctly structured policy, then verify alignment with the free Email Deliverability Test.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Technical guidance to align email content and settings<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p><strong>Content review and modification.<\/strong> Regularly review your email content for anything that might trigger spam filters. Adapt the language and formatting to be more professional and less spam-like. You can easily check it with <a href=\"https:\/\/www.warmy.io\/free-tools\/template-checker\" target=\"_blank\" rel=\"noopener noreferrer\">Warmy\u2019s free template checker.<\/a><\/p><\/li>\n\n\n\n<li><p><strong>Security configuration verification.<\/strong>\u00a0Regularly update and verify your email security settings. Ensure that antivirus and antimalware solutions are active and scanning your emails before they are sent.<\/p><\/li>\n\n\n\n<li><p><strong>Monitor feedback loops. <\/strong>Set up feedback loops with major ISPs to receive notifications when your emails are marked as spam or blocked. This feedback can help you adjust your email practices accordingly.<\/p><\/li>\n<\/ol>\n\n\n\n<p>Choosing \u2018System email only\u2019 permits only essential system notifications to be sent, while \u2018No access\u2019 halts all outbound emails, providing a safe environment for testing or when email communication needs to be paused temporarily.<\/p>\n\n\n\n<p>For related sub-variants of this error, <a href=\"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-552-5-3-4-solved\/\" target=\"_blank\" rel=\"noopener noreferrer\">SMTP Email Error 552 5.3.4<\/a> usually points to a message-size violation specifically, while <a href=\"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-552-5-1-1-solved\/\" target=\"_blank\" rel=\"noopener noreferrer\">SMTP Email Error 552 5.1.1<\/a> indicates the recipient address no longer exists \u2014 both require different remediation steps.<\/p>\n\n\n\n<p>Not sure if your emails are landing in the inbox? Run a free <a href=\"https:\/\/www.warmy.io\/free-tools\/email-deliverability-test\" target=\"_blank\" rel=\"noopener noreferrer\">Email Deliverability Test<\/a> and instantly see your inbox placement across Gmail, Outlook, and Yahoo \u2014 plus your SPF, DKIM, and DMARC status.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Utilizing email warm up tools to prevent SMTP errors<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/warmy-blog-wordpress-bucket.s3.amazonaws.com\/wp-content\/uploads\/2025\/03\/11092911\/8shots_so-1.webp\" alt=\"Graph showing email warmup performance with a line chart which helps with email sender reputation score. The x-axis represents dates from June 1 to June 9, and the y-axis represents email volume. Two lines indicate sent (1,200) and received (1,100) emails. Background is a soft gradient.\" title=\"\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>SMTP Error 552 5.7.0 can have a real impact on your email communication, mostly in regards to deliverability and server trust. <a href=\"https:\/\/www.warmy.io\/\" target=\"_blank\" rel=\"noopener noreferrer\">Warmy<\/a> is an AI-driven email warmup and deliverability platform that automatically builds your sender reputation, improves inbox placement, and keeps your emails out of spam \u2014 no technical expertise required. Here is how it helps prevent and solve 552 5.7.0 errors before they occur:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Warmy&#8217;s AI engine \u2014 powered by <a href=\"https:\/\/www.warmy.io\/product\/ai\" target=\"_blank\" rel=\"noopener noreferrer\">Adeline AI<\/a> \u2014 gradually increases your sending volume in a controlled, ISP-safe pattern. Adeline makes over 20 million decisions per day, building a personalized warmup schedule per mailbox and adjusting ramp-up pace in real time. This prevents the sudden-volume spikes that trigger content rejection policies at Gmail, Outlook, and Yahoo.<\/li>\n\n\n\n<li>Warmy supports warmup across all major providers: Gmail, Google Workspace, Microsoft 365, Outlook, Yahoo, Sendgrid, Mailgun, Custom SMTP, Brevo, Zoho, Amazon SES, and more \u2014 so your warmup mirrors your actual sending environment.<\/li>\n\n\n\n<li>The Warmup With Clicks feature adds real link-click signals on top of standard open and reply engagement, mirroring the deeper interaction patterns that Gmail&#8217;s algorithm values most. Most warmup tools only simulate opens \u2014 Warmy goes further with verified click engagement, complete with a dashboard showing actual click proof.<\/li>\n\n\n\n<li>Blacklist monitoring is built into Warmy&#8217;s Email Deliverability Test \u2014 no separate tool required. It checks your sending domain and IP against major spam blacklists and shows your exact inbox placement percentage across providers.<\/li>\n\n\n\n<li>Warmy&#8217;s free <a href=\"https:\/\/www.warmy.io\/free-tools\/spf-generator\" target=\"_blank\" rel=\"noopener noreferrer\">SPF Record Generator<\/a> and <a href=\"https:\/\/www.warmy.io\/free-tools\/dmarc-generator\" target=\"_blank\" rel=\"noopener noreferrer\">DMARC Record Generator<\/a> create correctly formatted authentication records that protect your domain from spoofing and satisfy the policy checks that trigger 552 5.7.0 rejections.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Test your deliverability before you hit send<\/h3>\n\n\n\n<p>Before launching a major email campaign, it\u2019s essential to know where your emails are landing.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"825\" height=\"527\" src=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2024\/07\/Screenshot_5.png\" alt=\"dashboard\" class=\"wp-image-7063\" title=\"\" srcset=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2024\/07\/Screenshot_5.png 825w, https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2024\/07\/Screenshot_5-300x192.png 300w, https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2024\/07\/Screenshot_5-768x491.png 768w\" sizes=\"auto, (max-width: 825px) 100vw, 825px\" \/><\/figure>\n\n\n\n<p>Complementing this is the <strong>Domain Health Hub<\/strong>\u2014a comprehensive dashboard that provides deep insights into your domain\u2019s performance, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>A domain health score based on authentication, blacklist status, and inbox placement<\/p><\/li>\n\n\n\n<li><p>Weekly and monthly reports to help you track spam rates and deliverability trends<\/p><\/li>\n\n\n\n<li><p>DNS checks to verify SPF, DKIM, and DMARC records<\/p><\/li>\n\n\n\n<li><p>Multi-domain monitoring for businesses managing multiple email domains<\/p><\/li>\n<\/ul>\n\n\n\n<p>The <a href=\"https:\/\/www.warmy.io\/free-tools\/template-checker\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Template Checker<\/strong><\/a> goes a step further by scanning your subject lines, email body, formatting, and links to identify any elements that might trigger spam filters\u2014especially within UK-based ISPs. You\u2019ll receive practical, actionable suggestions to refine your tone, remove problematic language, and improve overall structure. Now available as a convenient <a href=\"https:\/\/chromewebstore.google.com\/detail\/email-template-checker-wa\/oelldnebggajjfacfajacfbkeekeakip\" rel=\"noopener\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Chrome Extension<\/strong><\/a> for quick content checks.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2026\/03\/Template-Checker-1024x768.webp\" alt=\"Template Checker tool inside Warmy.io\" class=\"wp-image-5217\" title=\"\" srcset=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2026\/03\/Template-Checker-1024x768.webp 1024w, https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2026\/03\/Template-Checker-300x225.webp 300w, https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2026\/03\/Template-Checker-768x576.webp 768w, https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2026\/03\/Template-Checker-1536x1152.webp 1536w, https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2026\/03\/Template-Checker.webp 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">AI-powered warm up with customization<\/h3>\n\n\n\n<p>Warmy simplifies the email warmup process by leveraging Adeline AI to simulate natural sending behavior across a network of over 1 million real mailboxes \u2014 the largest email warmup network available. This helps gradually build a strong sender reputation without manual intervention.<\/p>\n\n\n\n<p>With Warmup Preferences, you can customize warmup distribution per provider \u2014 specifying the exact percentage of emails going to GSuite, Gmail, Microsoft 365, Outlook, Yahoo, and Private SMTP. You can also choose B2B or B2C engagement patterns to match your actual audience. This level of control ensures alignment with provider-specific thresholds, which directly reduces the likelihood of triggering content rejection policies like 552 5.7.0.<\/p>\n\n\n\n<p>Warmy also offers warmup in 30+ languages, so if you send internationally \u2014 across Europe, the US, or Asia-Pacific \u2014 your warmup traffic reflects the same geographic and linguistic diversity as your real campaigns.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\ud83d\udca1 Pro Tip: If you&#8217;re warming up a brand-new domain, <a href=\"https:\/\/postmaster.google.com\/\" rel=\"noopener\" target=\"_blank\" rel=\"noopener noreferrer\">Google Postmaster Tools<\/a> gives you a direct signal from Gmail on your domain reputation and spam rate \u2014 completely free. Pair it with Warmy&#8217;s Domain Health Hub to get a full picture: Postmaster for Gmail-side signals, Warmy for cross-provider inbox placement, blacklist status, and DNS validation.<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/warmy-blog-wordpress-bucket.s3.amazonaws.com\/wp-content\/uploads\/2025\/03\/11092845\/290shots_so-copy-1-1024x768.png\" alt=\"A dashboard displaying a profile section with a circular chart titled WARM-UP PREFERENCES. The chart shows percentages for Gmail, Outlook, G-Suite, Yahoo, and others. A table beneath lists specific percentages and email services.\" title=\"\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Resolving and alleviating error responses such as SMTP Error 552 5.7.0 error is critical in achieving reliable delivery of emails.<\/p>\n\n\n\n<p>Regular review and updating of the email system should always be a priority to operate within the server\u2019s regulations. Managing your email settings allows you to take charge of your communication with your clients and avoid any form of a breakdown. The action is not only helpful in avoiding potential errors, but it also assists you in increasing email productivity.<\/p>\n\n\n\n<p>If you\u2019re serious about taking your email deliverability to the next level, <a href=\"https:\/\/app.warmy.io\/signup\" rel=\"noopener\" target=\"_blank\" rel=\"noopener noreferrer\">sign up with Warmy today.<\/a><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"The Complete Tool For Email Deliverability: Meet Warmy.io!\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/jFXzuA-F-Nc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Simple Mail Transfer Protocol is an essential part of email communication. Once an email is written and sent, the SMTP server is responsible for forwarding and ensuring its secure reception. SMTP errors are part of a standardized response code system \u2014 every code tells you exactly why a message was accepted, deferred, or rejected. If [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":7465,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[104],"tags":[],"class_list":["post-3866","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-deliverability"],"acf":[],"lang":"en","translations":{"en":3866},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/posts\/3866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/comments?post=3866"}],"version-history":[{"count":4,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/posts\/3866\/revisions"}],"predecessor-version":[{"id":7469,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/posts\/3866\/revisions\/7469"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/media\/7465"}],"wp:attachment":[{"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/media?parent=3866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/categories?post=3866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/tags?post=3866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}