{"id":19223,"date":"2026-02-18T14:11:01","date_gmt":"2026-02-18T14:11:01","guid":{"rendered":"https:\/\/lite14.net\/blog\/?p=19223"},"modified":"2026-02-18T14:11:01","modified_gmt":"2026-02-18T14:11:01","slug":"microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders","status":"publish","type":"post","link":"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/","title":{"rendered":"Microsoft Outlook Update Strengthens Spam Filters Impacting Bulk Email Senders"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Microsoft_Outlook_update_strengthens_spam_filters_impacting_bulk_email_senders_%E2%80%94_full_details\" >Microsoft Outlook update strengthens spam filters, impacting bulk email senders \u2014 full details<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Key_details_of_the_update\" >Key details of the update<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Why_this_matters\" >Why this matters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Best_practices_for_bulk_email_senders\" >Best practices for bulk email senders<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Expected_impact\" >Expected impact<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Bottom_line\" >Bottom line<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Microsoft_Outlook_spam_filter_update_%E2%80%94_case_studies_expert_commentary\" >Microsoft Outlook spam filter update \u2014 case studies &amp; expert commentary<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#1_Case_studies\" >1) Case studies<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#11_Retailer_email_campaign_deliverability_drop\" >1.1 Retailer email campaign deliverability drop<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#12_B2B_software_company_%E2%80%94_testing_subject_line_variants\" >1.2 B2B software company \u2014 testing subject line variants<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#13_Nonprofit_fundraiser_%E2%80%94_subscriber_segmentation_cleanup\" >1.3 Nonprofit fundraiser \u2014 subscriber segmentation cleanup<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#2_Expert_commentary\" >2) Expert commentary<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Email_deliverability_specialists\" >Email deliverability specialists<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Marketing_automation_consultants\" >Marketing automation consultants<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Security_analysts\" >Security analysts<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#3_Broader_implications\" >3) Broader implications<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#4_Practical_advice_for_bulk_senders\" >4) Practical advice for bulk senders<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/lite14.net\/blog\/2026\/02\/18\/microsoft-outlook-update-strengthens-spam-filters-impacting-bulk-email-senders\/#Bottom_line-2\" >Bottom line<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Microsoft_Outlook_update_strengthens_spam_filters_impacting_bulk_email_senders_%E2%80%94_full_details\"><\/span>Microsoft Outlook update strengthens spam filters, impacting bulk email senders \u2014 full details<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"Key_details_of_the_update\"><\/span>Key details of the update<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li><strong>Improved spam detection algorithms<\/strong>\n<ul>\n<li>Uses <strong>machine learning and heuristic analysis<\/strong> to identify suspicious emails.<\/li>\n<li>Considers sender reputation, email content, links, attachments, and historical complaint patterns.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Enhanced bulk email filtering<\/strong>\n<ul>\n<li>Emails sent to large recipient lists are <strong>more rigorously evaluated<\/strong>.<\/li>\n<li>Low engagement, high complaint rates, or unverified sending domains may result in emails being marked as spam.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Phishing and malware protection<\/strong>\n<ul>\n<li>Detects suspicious links, attachment behavior, and spoofed sender addresses.<\/li>\n<li>Provides alerts or automatically quarantines high-risk emails.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Sender reputation scoring<\/strong>\n<ul>\n<li>Outlook evaluates the <strong>sending domain and IP reputation<\/strong> in real time.<\/li>\n<li>Bulk email senders with poor engagement metrics or prior spam reports risk deliverability issues.<\/li>\n<\/ul>\n<\/li>\n<li><strong>User feedback integration<\/strong>\n<ul>\n<li>Outlook\u2019s spam filters incorporate <strong>user \u201creport as spam\u201d feedback<\/strong> to refine filtering.<\/li>\n<li>Ensures ongoing adaptability to new phishing and spam techniques.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"Why_this_matters\"><\/span>Why this matters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>For marketers:<\/strong> Bulk email campaigns may see <strong>reduced inbox placement<\/strong>, especially if engagement is low or domain\/IP reputation is poor.<\/li>\n<li><strong>For consumers:<\/strong> Users receive fewer unwanted messages, improving <strong>email experience and security<\/strong>.<\/li>\n<li><strong>For IT and compliance teams:<\/strong> Organizations need to <strong>monitor deliverability metrics and adhere to best practices<\/strong> in email marketing.<\/li>\n<\/ul>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"Best_practices_for_bulk_email_senders\"><\/span>Best practices for bulk email senders<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li><strong>Authenticate domains<\/strong>\n<ul>\n<li>Use <strong>SPF, DKIM, and DMARC<\/strong> records to verify sending domains.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Maintain clean mailing lists<\/strong>\n<ul>\n<li>Remove inactive or unengaged subscribers to improve engagement rates.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Segment and personalize content<\/strong>\n<ul>\n<li>Highly relevant content reduces complaints and spam markings.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Monitor engagement metrics<\/strong>\n<ul>\n<li>Track open rates, click-throughs, and bounce rates to maintain a positive sender reputation.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Avoid spammy content<\/strong>\n<ul>\n<li>Refrain from using deceptive subject lines, excessive capitalization, or aggressive calls-to-action.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"Expected_impact\"><\/span>Expected impact<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th>Area<\/th>\n<th>Likely effect<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Bulk email deliverability<\/td>\n<td>Potential decrease for poorly managed lists or unverified domains<\/td>\n<\/tr>\n<tr>\n<td>Security<\/td>\n<td>Improved protection against phishing and malware<\/td>\n<\/tr>\n<tr>\n<td>User experience<\/td>\n<td>Fewer unwanted messages in inboxes<\/td>\n<\/tr>\n<tr>\n<td>Marketing strategy<\/td>\n<td>Requires enhanced personalization, engagement tracking, and compliance adherence<\/td>\n<\/tr>\n<tr>\n<td>Compliance<\/td>\n<td>Encourages adherence to CAN-SPAM, GDPR, and other email regulations<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"Bottom_line\"><\/span>Bottom line<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Microsoft Outlook\u2019s update <strong>strengthens spam filters and prioritizes user safety<\/strong>, but it also <strong>raises the bar for bulk email marketers<\/strong>. Senders must maintain domain authentication, clean subscriber lists, and relevant content to ensure inbox deliverability.<\/p>\n<blockquote><p>Bulk email campaigns that fail to adapt risk <strong>lower engagement and reduced visibility<\/strong>, while properly managed campaigns benefit from <strong>higher security, better targeting, and stronger user trust<\/strong>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Microsoft_Outlook_spam_filter_update_%E2%80%94_case_studies_expert_commentary\"><\/span>Microsoft Outlook spam filter update \u2014 case studies &amp; expert commentary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Microsoft\u2019s recent update to Outlook\u2019s spam and bulk\u2011email filtering aims to improve user safety by aggressively blocking unwanted or unsafe messages. Below are real\u2011world examples of how similar filtering changes have played out for bulk senders and expert commentary on what it means for marketers and organizations.<\/p>\n<hr \/>\n<h1><span class=\"ez-toc-section\" id=\"1_Case_studies\"><\/span>1) Case studies<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2><span class=\"ez-toc-section\" id=\"11_Retailer_email_campaign_deliverability_drop\"><\/span>1.1 Retailer email campaign deliverability drop<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Scenario:<\/strong><br \/>\nA regional retailer sent weekly promotional newsletters to its customer base. After the Outlook update, a notable percentage of messages were routed to spam folders.<\/p>\n<p><strong>Cause:<\/strong><\/p>\n<ul>\n<li>Low engagement from segments of the mailing list<\/li>\n<li>Domain lacked full authentication (missing or misconfigured DMARC)<\/li>\n<\/ul>\n<p><strong>Actions taken:<\/strong><\/p>\n<ul>\n<li>Cleaned the mailing list (removed inactive addresses)<\/li>\n<li>Fully configured SPF, DKIM, and DMARC authentication<\/li>\n<li>Improved personalization and segmentation<\/li>\n<\/ul>\n<p><strong>Outcome:<\/strong><br \/>\nWithin a few weeks, inbox placement for Outlook users increased significantly, and spam reports dropped.<\/p>\n<p><strong>Lesson:<\/strong><br \/>\nDeliverability depends heavily on domain reputation and engagement metrics, not just message volume.<\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"12_B2B_software_company_%E2%80%94_testing_subject_line_variants\"><\/span>1.2 B2B software company \u2014 testing subject line variants<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Scenario:<\/strong><br \/>\nA B2B SaaS vendor noticed that certain Outlook users reported messages as junk, even when engagement was otherwise stable.<\/p>\n<p><strong>Analysis:<\/strong><\/p>\n<ul>\n<li>High\u2011frequency sends with repetitive subject lines<\/li>\n<li>Overuse of aggressive marketing language triggered heuristic filters<\/li>\n<\/ul>\n<p><strong>Solution:<\/strong><\/p>\n<ul>\n<li>Adopted AI\u2011generated subject line variations to reduce similarity<\/li>\n<li>Used rotational sending schedules and A\/B testing<\/li>\n<\/ul>\n<p><strong>Outcome:<\/strong><br \/>\nEngagement from Outlook recipients improved, and spam flags decreased.<\/p>\n<p><strong>Insight:<\/strong><br \/>\nContent signals (like subjects) can influence filter decisions when combined with send patterns.<\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"13_Nonprofit_fundraiser_%E2%80%94_subscriber_segmentation_cleanup\"><\/span>1.3 Nonprofit fundraiser \u2014 subscriber segmentation cleanup<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Scenario:<\/strong><br \/>\nA nonprofit organization saw reduced donation campaign visibility after Outlook\u2019s update.<\/p>\n<p><strong>Challenge:<\/strong><\/p>\n<ul>\n<li>Large portions of the subscriber list were inactive<\/li>\n<li>Generic \u201cone\u2011size\u2011fits\u2011all\u201d messaging diluted engagement<\/li>\n<\/ul>\n<p><strong>Action:<\/strong><\/p>\n<ul>\n<li>Re\u2011engaged dormant subscribers with tailored re\u2011opt\u2011in campaigns<\/li>\n<li>Segmented supporters by past interaction and donation behavior<\/li>\n<\/ul>\n<p><strong>Result:<\/strong><br \/>\nSegmented campaigns achieved noticeably higher open and donation rates on Outlook.<\/p>\n<p><strong>Learning:<\/strong><br \/>\nSegmentation and relevance help reduce spam classification and foster positive engagement.<\/p>\n<hr \/>\n<h1><span class=\"ez-toc-section\" id=\"2_Expert_commentary\"><\/span>2) Expert commentary<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h3><span class=\"ez-toc-section\" id=\"Email_deliverability_specialists\"><\/span>Email deliverability specialists<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<blockquote><p>\u201cOutlook\u2019s updated filters focus on <strong>engagement and sender reputation<\/strong>. Senders with poor engagement metrics or missing authentication are most affected.\u201d<\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Marketing_automation_consultants\"><\/span>Marketing automation consultants<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<blockquote><p>\u201cImproving list hygiene, engagement tracking, and content relevance is no longer optional \u2014 it\u2019s critical for inbox placement.\u201d<\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Security_analysts\"><\/span>Security analysts<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<blockquote><p>\u201cStronger filters reduce phishing risk for users, but legitimate marketers must adapt by strengthening authentication and avoiding \u2018spammy\u2019 language.\u201d<\/p><\/blockquote>\n<hr \/>\n<h1><span class=\"ez-toc-section\" id=\"3_Broader_implications\"><\/span>3) Broader implications<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<table>\n<thead>\n<tr>\n<th>Area<\/th>\n<th>Impact<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Deliverability<\/td>\n<td>Can drop significantly for unverified or low\u2011engagement lists<\/td>\n<\/tr>\n<tr>\n<td>Sender reputation<\/td>\n<td>Earned through consistent engagement and authentication<\/td>\n<\/tr>\n<tr>\n<td>Content strategy<\/td>\n<td>Must be relevant and compliant with best practices<\/td>\n<\/tr>\n<tr>\n<td>User experience<\/td>\n<td>Fewer unwanted or unsafe messages<\/td>\n<\/tr>\n<tr>\n<td>Security<\/td>\n<td>Enhanced protection for Outlook users against phishing\/malware<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h1><span class=\"ez-toc-section\" id=\"4_Practical_advice_for_bulk_senders\"><\/span>4) Practical advice for bulk senders<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<ul>\n<li><strong>Authenticate email domains<\/strong> (SPF, DKIM, DMARC)<\/li>\n<li><strong>Maintain clean lists<\/strong> by removing inactive subscribers<\/li>\n<li><strong>Segment audiences<\/strong> for targeted messaging<\/li>\n<li><strong>Optimize content<\/strong> to be relevant and not overly promotional<\/li>\n<li><strong>Track engagement metrics<\/strong> closely and adapt based on performance<\/li>\n<li><strong>Avoid spam triggers<\/strong> like excessive symbols or clickbait subject lines<\/li>\n<\/ul>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"Bottom_line-2\"><\/span>Bottom line<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Outlook\u2019s strengthened spam filters improve security and reduce unwanted messages for users \u2014 but they also raise the bar for bulk email senders. Case studies show that senders who <strong>adapt with proper authentication, list management, and relevant content<\/strong> can maintain strong inbox placement, while those who don\u2019t may see their messages diverted to spam or blocked entirely.<\/p>\n<blockquote><p>In today\u2019s email ecosystem, <strong>reputation and relevance matter as much as volume<\/strong>.<\/p><\/blockquote>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft Outlook update strengthens spam filters, impacting bulk email senders \u2014 full details &nbsp; Key details of the update Improved spam detection algorithms Uses machine&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[270,90],"tags":[],"class_list":["post-19223","post","type-post","status-publish","format-standard","hentry","category-digital-marketing","category-news-update"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Microsoft Outlook Update Strengthens Spam Filters Impacting Bulk Email Senders - Lite14 Tools &amp; 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