{"id":3840,"date":"2024-04-05T14:31:21","date_gmt":"2024-04-05T14:31:21","guid":{"rendered":"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-501-solved\/"},"modified":"2026-07-31T11:37:33","modified_gmt":"2026-07-31T11:37:33","slug":"how-to-fix-smtp-email-error-501-solved","status":"publish","type":"post","link":"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-501-solved\/","title":{"rendered":"SMTP Error 501: How to Fix It [SOLVED]"},"content":{"rendered":"\n<p><strong>TL;DR: <\/strong>SMTP Error 501 is a syntax error triggered by a malformed email address or an improperly formatted SMTP command, and it usually clears up once you fix the address format or command spacing. The four common sub-variants, 5.5.4, 5.1.7, 5.1.3, and 5.7.1, point to different root causes ranging from header syntax to sender authentication, so check the exact code before you start changing settings. From there, verifying your email client&#8217;s SMTP settings and keeping your domain&#8217;s sender reputation healthy prevents the error from recurring.<\/p>\n\n\n\n<p>SMTP is an acronym for <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>\u2014the protocol used for sending emails.<\/p>\n\n\n\n<p>One of the problems that can occur when SMTP isn\u2019t functioning correctly is something called SMTP Error 501. Primarily a syntax error, SMTP Error 501 actually stops emails from being sent and\/or received.<\/p>\n\n\n\n<p>Usually, senders receive a bounced back email stating that their email could not be sent due to SMTP Error 501\u2014which can be <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Decoding SMTP Error 501<\/h2>\n\n\n\n<p><strong>SMTP Error 501 generally occurs due to an incorrectly formatted email address or SMTP command lines when trying to send an email<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;The error contains \u201c501\u201d somewhere in the body of the response message with accompanying text such as \u201cSyntax error in parameters or arguments\u201d or \u201cInvalid address.\u201d<\/li>\n\n\n\n<li>This focuses exactly on what the issue is, whether an SMTP command is improper, whether there were no angle brackets surrounding the email address, or whether the email address itself is erroneous.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>In layman\u2019s terms, the server rejects the request due to <strong>bad syntax<\/strong> and subsequently issues an SMTP error code pertaining to the incorrectly written email command or the incorrectly formatted email address.<\/p>\n\n\n\n<p>These syntax rules are not arbitrary. The exact command formatting an SMTP server expects, including required angle brackets and parameter order, is defined in <a href=\"https:\/\/datatracker.ietf.org\/doc\/html\/rfc5321\" rel=\"noopener\" target=\"_blank\" rel=\"noopener noreferrer\">RFC 5321<\/a>, the official protocol standard for SMTP.<\/p>\n\n\n\n<p>Related Reading: <a href=\"https:\/\/www.warmy.io\/blog\/smtp-error-codes-and-messages\/\" target=\"_blank\" rel=\"noopener noreferrer\">The Ultimate Guide to SMTP Error Codes, What They Mean, and How to Fix Them<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Primary triggers of SMTP Error 501<\/h2>\n\n\n\n<p>SMTP Error 501 is caused due to many reasons\u2002and mostly syntax errors and formatting errors. Here are some\u2002common triggers:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><b>Incorrect email format.<\/b> The simplest reason for SMTP Error\u2002501 is that you entered an email address that does not follow the standard format (such as missing up the \u201c@\u201d sign or domain part).<\/li>\n\n\n\n<li><b>SMTP command syntax errors.<\/b> This causes an error when the\u2002email client sends SMTP commands to the server, and they\u2019re not in the correct format. Examples include: missing parameters, incorrect\u2002spacing, and unsupported commands.<\/li>\n\n\n\n<li><b>Configuration settings.<\/b> For example, if an email client is misconfigured \u2014 if its SMTP server details are incorrect \u2014 it can cause\u2002syntax errors which results in a 501 error.<\/li>\n\n\n\n<li><b>Case sensitivity in email addresses.<\/b> If the email address contains special characters\u2002not supported by the email server, it might consider the address invalid and return a 501 error.<\/li>\n\n\n\n<li><b>Incomplete or extra spaces. <\/b>A trailing whitespace on an email address, or extra key spaces (or missing\u2002information) on the command line gets misinterpreted by the server, which flags it as a syntax error.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Comprehensive guide to rectify SMTP Error 501<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">For Gmail users<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Verify email formats.<\/strong>&nbsp;Double-check the recipient\u2019s email address for any formatting errors. Ensure it follows the standard format (<code>username@example.com<\/code>).<\/li>\n\n\n\n<li><strong>Check settings. <\/strong>Go to Settings &gt; See all settings &gt; Accounts and Import to review the \u201cSend mail as\u201d settings, ensuring the email address is correctly formatted and the SMTP server settings are accurate.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">For Outlook users<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Account configurations.<\/strong>&nbsp;In Outlook, go to File &gt; Account Settings &gt; Account Settings. Select your email account and click \u201cChange\u201d to verify your outgoing mail server (SMTP) settings are correct. Also, ensure the email address is in the correct format.<\/li>\n\n\n\n<li><strong>Email syntax.<\/strong>&nbsp;Before sending an email, review the recipient\u2019s email address for any typographical errors or syntax issues that could lead to a 501 error.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">For Yahoo and other email services<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Precautions and settings.<\/strong>&nbsp;Similar to Gmail and Outlook, verify the email address format and SMTP server settings within the account settings section of your email service. Ensure there are no extra spaces or special characters in the email addresses.<\/li>\n\n\n\n<li><strong>Service-specific guidelines.<\/strong>&nbsp;Consult the help section or support center of your email service for any specific instructions on preventing SMTP Error 501, as some services might have unique requirements.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Technical recommendations for email administrators<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Command syntax checks.<\/strong>&nbsp;When configuring email servers or sending commands directly, ensure that SMTP command lines are correctly formatted. Refer to the SMTP protocol documentation for guidance.<\/li>\n\n\n\n<li><strong>Server configurations.<\/strong>&nbsp;Regularly review server settings, particularly those related to email sending (e.g., SMTP relay settings). Ensure your server\u2019s IP address is not listed on any blacklists, as this can indirectly cause SMTP errors.<\/li>\n\n\n\n<li><strong>Logging and monitoring.<\/strong>&nbsp;Implement logging of SMTP transactions. These logs can provide insights into any syntax errors or misconfigurations leading to SMTP Error 501.<\/li>\n\n\n\n<li><strong>Test environments.<\/strong> Before making changes in a live environment, use test email accounts to send messages and confirm that no syntax errors occur, particularly when updating server configurations or deploying new email policies.<\/li>\n<\/ul>\n\n\n\n<p><strong>Not sure where your emails are landing?<\/strong> <a href=\"https:\/\/www.warmy.io\/free-tools\/email-deliverability-test\" target=\"_blank\" rel=\"noopener noreferrer\">Run a free Email Deliverability Test<\/a> and see exactly what is triggering delivery problems like SMTP Error 501, before they cost you opens.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Understanding variations of error 501<\/h2>\n\n\n\n<p>Understanding these variants helps pinpoint the specific problem for more targeted resolutions.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Variant<\/th><th>Implications<\/th><th>Resolution<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-501-5-5-4-solved\/\" target=\"_blank\" rel=\"noopener noreferrer\">501 5.5.4<\/a><\/td><td>Command syntax issue, often incorrect spacing or unsupported characters in the email header.<\/td><td>Review your SMTP command syntax against protocol specifications for format and spacing. Remove any unsupported characters from the header.<\/td><\/tr><tr><td><a href=\"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-501-5-1-7-solved\/\" target=\"_blank\" rel=\"noopener noreferrer\">501 5.1.7<\/a><\/td><td>Problem with the sender&#8217;s address, typically incorrect domain formatting or prohibited characters.<\/td><td>Verify the sender address for formatting errors, confirm the domain is spelled correctly, and check DMARC alignment if the address doesn&#8217;t match your authorized sending domain.<\/td><\/tr><tr><td><a href=\"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-501-5-1-3-solved\/\" target=\"_blank\" rel=\"noopener noreferrer\">501 5.1.3<\/a><\/td><td>Syntax error in the recipient&#8217;s address, such as a missing &#8220;@&#8221; or other formatting issues.<\/td><td>Confirm the recipient&#8217;s address includes &#8220;@&#8221; and a valid domain. Ask recipients to check their own email settings if the error persists.<\/td><\/tr><tr><td><a href=\"https:\/\/www.warmy.io\/blog\/how-to-fix-smtp-email-error-501-5-7-1-solved\/\" target=\"_blank\" rel=\"noopener noreferrer\">501 5.7.1<\/a><\/td><td>Authentication failure. The sender isn&#8217;t authorized to send from the specified domain or IP.<\/td><td>Check that your SPF and DKIM records are correctly configured, and review your DMARC policy. <a href=\"https:\/\/support.google.com\/a\/answer\/81126\" target=\"_blank\" rel=\"noreferrer noopener\">Google&#8217;s sender guidelines for bulk senders<\/a> outline the authentication baseline most major providers now enforce.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\ud83d\udca1 Pro Tip:<\/strong> Check the enhanced status code, the part after &#8220;501&#8221; like &#8220;5.5.4&#8221;, before you start changing settings. It tells you which of the four resolution paths above actually applies, so you are not troubleshooting authentication when the real problem is header syntax.<\/p>\n<\/blockquote>\n\n\n\n<p><strong>\ud83d\udd16 Related Reading: <\/strong><a href=\"https:\/\/www.warmy.io\/blog\/why-do-you-need-to-configure-spf-dkim-and-dmarc\/\" target=\"_blank\" rel=\"noopener noreferrer\">SPF, DKIM, and DMARC: Boosting Email Security and Deliverability<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Leveraging Warmy.io for error prevention<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2025\/03\/8shots_so.png\" alt=\"A performance graph on a light orange background shows email activity over time. Two lines represent Sent and Received emails, starting at zero and peaking at about 200. Labels indicate daily, weekly, and monthly metrics.\" title=\"\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Warmy 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, no technical expertise required.<\/p>\n\n\n\n<p>To create a favorable sending history, these services progressively increase the number of emails sent from a new account or domain, imitating regular email activity.<\/p>\n\n\n\n<p><strong>Warmy.io\u2019s warmup process advantages include:<\/strong><\/p>\n\n\n\n<p>\ud83d\udc49<strong> Enhances sender reputation.<\/strong> Warmy.io sends emails from your account in a methodical manner, progressively turning up the volume over time. By doing this, you can improve your sender reputation by making sure that email providers and ISPs view your account as a reliable sender.<\/p>\n\n\n\n<p>\ud83d\udc49 <strong>Minimizes SMTP faults.<\/strong> The chance of running into SMTP faults such as the 501 error is decreased when a sender has a strong reputation. Unexpected jumps in email volume might raise red flags for email providers, but services like Warmy.io make sure your emails are less likely to be rejected or marked as spam.<\/p>\n\n\n\n<p>\ud83d\udc49<strong> Boosts email deliverability.<\/strong> Warmy.io helps make sure your emails get through to the mailbox instead of being filtered as spam or bouncing back from SMTP issues by enhancing your sender reputation and reducing mistakes. Whether you are sending transactional, marketing, or personal emails, this is essential for efficient email communication.<\/p>\n\n\n\n<p>\ud83d\udc49 <strong>Saves time and resources.<\/strong> Setting up and carrying out an email sending schedule takes a lot of work when developing a sender reputation manually. Warmy.io streamlines this procedure, freeing you up to concentrate on content creation and improved email management.<\/p>\n\n\n\n<p>\ud83d\udc49 <strong>Gives you useful insights<\/strong>. Warmy.io does more than just warm up your emails; it also provides you with analytics and feedback on how well your emails are performing. You can use this information to improve your email strategy and lower the frequency of SMTP problems by learning more about open rates, bounce rates, and other important metrics.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Additional warmup features that enhance deliverability<\/h3>\n\n\n\n<p>Aside from the automated warmup process, Warmy has other tools and features. When used in parallel to the warmup, email deliverability can drastically improve.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Free email deliverability test and Domain Health Hub<\/h4>\n\n\n\n<p>The free <a href=\"https:\/\/www.warmy.io\/free-tools\/email-deliverability-test\" target=\"_blank\" rel=\"noopener noreferrer\">email deliverability test<\/a>&nbsp;from Warmy provides a comprehensive assessment of your emails and where they are landing. Here are some other examples of the valuable information and data the deliverability test provides:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Inbox placement analysis: the percentage of your emails that end up in the spam folder, promotions tab, inbox, and even the unreceived ones.&nbsp;<\/li>\n\n\n\n<li>Blacklist status: Learn if your domain or IP is listed on any blacklists so you can proceed with the <a href=\"https:\/\/www.warmy.io\/blog\/email-domain-ip-blacklist-removal-steps-to-delist-your-ip\/\" target=\"_blank\" rel=\"noopener noreferrer\">delisting process<\/a>.<\/li>\n\n\n\n<li>Authentication verification: Assess your email reputation and verifies your email authentication settings such as<a href=\"https:\/\/www.warmy.io\/blog\/why-do-you-need-to-configure-spf-dkim-and-dmarc\" target=\"_blank\" rel=\"noopener noreferrer\"> SPF, DKIM, and DMARC.<\/a><\/li>\n<\/ul>\n\n\n\n<p>Additionally, Warmy\u2019s Domain Health Hub is on a level of its own. Instead of monitoring individual email addresses, Warmy.io provides a domain-level health dashboard so businesses can take a more strategic approach to email deliverability.&nbsp; The Domain Health Hub includes the following features:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A domain health score based on a combination of various factors like authentication, blacklist status, and inbox placement tests. You\u2019ll also be able to monitor your spam rate trends and overall deliverability performance with weekly or monthly tracking options.<\/li>\n\n\n\n<li>Comprehensive DNS status checks to easily validate SPF, DKIM, DMARC, rDNS, MX, and A records for stronger authentication &amp; security.<\/li>\n\n\n\n<li>Optimized multi-domain monitoring so users can manage all their domains from one dashboard and identify which ones need immediate attention.<\/li>\n\n\n\n<li>Quick access to a detailed breakdown of health metrics, performance reports, and deliverability trends per domain.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2025\/03\/562shots_so-1-1.webp\" alt=\"A digital dashboard titled Email Deliverability Test shows a summary of results. A circular graph indicates 9 hours to completion. Charts below display placement percentages across platforms like Gmail, Outlook, and Yahoo.\" title=\"\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">SPF, DKIM, and DMARC testing<\/h4>\n\n\n\n<p>Automatically validate and optimize SPF and DMARC records with Warmy\u2019s built-in authentication checker and free record generators (for <a href=\"https:\/\/www.warmy.io\/free-tools\/spf-generator\" target=\"_blank\" rel=\"noopener noreferrer\">SPF<\/a> and <a href=\"https:\/\/www.warmy.io\/free-tools\/dmarc-generator\" target=\"_blank\" rel=\"noopener noreferrer\">DMARC<\/a>) to improve email security and deliverability.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2025\/03\/675shots_so-1.webp\" alt=\"A screenshot of a Free SPF Record Generator interface with steps: Domain, ESP, Email, and SPF value. The current step is Email, prompting users to enter their email address with a Next button below the input field.\" title=\"\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Advanced email warmup customization:<\/h4>\n\n\n\n<p>Tailor your warmup distribution across various email providers (Gmail, Outlook, etc.) and define engagement patterns for better warmup performance.<\/p>\n\n\n\n<p>You can also tailor engagement patterns by choosing between B2B or B2C customers.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2025\/03\/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<h4 class=\"wp-block-heading\">Established email seed list<\/h4>\n\n\n\n<p>Benefit from real engagement by using Warmy\u2019s advanced seed list, with automated management and API integration for optimized inbox placement and stronger sender reputation.<\/p>\n\n\n\n<p>Warmy has also recently introduced the API Endpoint for Established Seed List\u2014a new way to access, manage, and configure your seed list splits directly from your system. This means:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Seamless integration with real-time seed list data that goes straight into your system with API access.<\/li>\n\n\n\n<li>Efficiency boost via automated split management which reduces errors, and saves valuable time.<\/li>\n\n\n\n<li>Better inbox placement due to properly configured splits mean fewer bounces and stronger sender reputation.<\/li>\n<\/ul>\n\n\n\n<p><a href=\"https:\/\/www.warmy.io\/product\/seed-list\" target=\"_blank\" rel=\"noopener noreferrer\">Learn more about Warmy\u2019s seed lists here<\/a>. Or, you may want to get a more in-depth look at how Warmy\u2019s seed lists work and what they can do for your email deliverability:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.warmy.io\/blog\/email-warmup-alternatives-when-traditional-warmup-isnt-enough\/\" target=\"_blank\" rel=\"noopener noreferrer\">Email Warmup Alternatives: When Traditional Warmup Isn\u2019t Enough<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.warmy.io\/blog\/email-engagement-how-seed-list-helps-improve-open-click-rates\/\" target=\"_blank\" rel=\"noopener noreferrer\">Email Engagement How Seed List Helps Improve Open &amp; Click Rates<\/a><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.warmy.io\/blog\/wp-content\/uploads\/2024\/05\/API-Seed-list1-1-1024x768.png\" alt=\"Screenshot showing Warmy Established Seed List with API Endpoint\" title=\"\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Avoid SMTP errors and take control of your deliverability with Warmy.io<\/h2>\n\n\n\n<p>Ultimately, the best way to avoid SMTP Error 501 in the future is to make the required changes to email address syntax and SMTP commands formatting immediately.<\/p>\n\n\n\n<p>Preventative solutions involve awareness of email address formatting and setup, as well as ensuring proper syntax for SMTP commands and changes to email client configurations.<\/p>\n\n\n\n<p>Meanwhile, using <a href=\"https:\/\/warmy.io\" rel=\"noopener\" target=\"_blank\" rel=\"noopener noreferrer\">Warmy.io<\/a> for email warmup helps prevents these errors from occurring since it increases sender reputation and improves email deliverability.<\/p>\n\n\n\n<p>Following this suggestion, you\u2019ll fix SMTP Error 501 in no time and resume proper and productive emailing.<\/p>\n\n\n\n<p><a href=\"https:\/\/app.warmy.io\/signup\" rel=\"noopener\" target=\"_blank\" rel=\"noopener noreferrer\">Sign up for a free trial<\/a> today and experience the difference.<\/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=\"Email Deliverability Test Dashboard | Onboarding\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/iU5zczpixAk?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>TL;DR: SMTP Error 501 is a syntax error triggered by a malformed email address or an improperly formatted SMTP command, and it usually clears up once you fix the address format or command spacing. The four common sub-variants, 5.5.4, 5.1.7, 5.1.3, and 5.7.1, point to different root causes ranging from header syntax to sender authentication, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":8605,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[104],"tags":[],"class_list":["post-3840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-deliverability"],"acf":[],"lang":"en","translations":{"en":3840,"es":3953},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/posts\/3840","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=3840"}],"version-history":[{"count":5,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/posts\/3840\/revisions"}],"predecessor-version":[{"id":8608,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/posts\/3840\/revisions\/8608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/media\/8605"}],"wp:attachment":[{"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/media?parent=3840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/categories?post=3840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.warmy.io\/blog\/wp-json\/wp\/v2\/tags?post=3840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}