{"id":2584,"date":"2013-04-03T16:35:31","date_gmt":"2013-04-03T16:35:31","guid":{"rendered":"https:\/\/www.inmotionhosting.com\/support\/2013\/04\/03\/prevent-winmaildat\/"},"modified":"2021-12-03T23:00:53","modified_gmt":"2021-12-04T04:00:53","slug":"prevent-winmaildat","status":"publish","type":"post","link":"https:\/\/www.inmotionhosting.com\/support\/email\/outlook\/prevent-winmaildat\/","title":{"rendered":"Prevent Outlook from Sending the Winmail.dat File"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/12\/winmaildatfile-1024x538.png\" alt=\"\" class=\"wp-image-92739\" srcset=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/12\/winmaildatfile-1024x538.png 1024w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/12\/winmaildatfile-300x158.png 300w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/12\/winmaildatfile-768x403.png 768w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/12\/winmaildatfile.png 1200w\" sizes=\"auto, (min-width: 1360px) 876px, (min-width: 960px) calc(61.58vw + 51px), calc(100vw - 80px)\" \/><\/figure>\n\n\n\n<p><strong>Microsoft Outlook<\/strong> is a widely used email client that will often take emails that were created or formatted using <strong>Rich Text<\/strong> and then automatically store the formatting data into a file named <strong>winmail.dat<\/strong>. This file is then attached to the email that you are sending. You can avoid this by using <strong>HTML <\/strong>or <strong>Plain Text<\/strong> when composing emails.  Follow the directions in our guide below to learn how you can configure <strong>Outlook <\/strong>to stop this issue. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#prevent\">Configure <strong>Outlook <\/strong>to prevent Winmail.dat<\/a><\/li><li><a href=\"#contacts\">Change settings for individual contacts<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"prevent\">Prevent the Winmail.dat file attachment with Outlook Settings Changes<\/h2>\n\n\n\n<p>All of the steps below do require that you have access to the <strong>Outlook<\/strong> client settings. If your access levels prevent you from making these changes then you will need to speak with your administrator before these changes can be made.<\/p>\n\n\n\n<ol class=\"article_list wp-block-list\"><li>Login to <strong>Outlook<\/strong>, then click on <strong>File<\/strong> to go to the <strong>Account Information<\/strong> page. Click on <strong>Options<\/strong>.<br><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"417\" class=\"wp-image-92745\" style=\"width: 650px;\" src=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/01-preventwinmaildat.png\" alt=\"windows account information\" srcset=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/01-preventwinmaildat.png 715w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/01-preventwinmaildat-300x193.png 300w\" sizes=\"auto, (min-width: 1360px) 876px, (min-width: 960px) calc(61.58vw + 51px), calc(100vw - 80px)\" \/><\/li><li>Next, in the column at left click on <strong>Mail<\/strong>. Then go to the section labeled <em>Compose messages<\/em>. In the drop-down menu next to <em>Compose messages in this format<\/em>, click on <strong>HTML <\/strong>or<strong> Plain Text<\/strong>. Any messages that you compose will automatically be set to this format.<br><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"468\" class=\"wp-image-92747\" style=\"width: 650px;\" src=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/02-preventwinmaildat.png\" alt=\"windows selection\" srcset=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/02-preventwinmaildat.png 734w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/02-preventwinmaildat-300x216.png 300w\" sizes=\"auto, (min-width: 1360px) 876px, (min-width: 960px) calc(61.58vw + 51px), calc(100vw - 80px)\" \/><\/li><li>After you have set your message composer to use HTML, we have to go the <strong>Message format<\/strong> section for one other setting. Scroll down until you find <em>When sending messages in Rich Text format to Internet recipients<\/em>. Click on the drop-down menu and make sure that it set to <strong>Convert to HTML format<\/strong>. Click <strong>OK <\/strong>when you\u2019re done with your changes in order to save your settings.<br><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"468\" class=\"wp-image-92748\" style=\"width: 650px;\" src=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/03-preventwinmaildat.png\" alt=\"outlook message format\" srcset=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/03-preventwinmaildat.png 736w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2013\/04\/03-preventwinmaildat-300x216.png 300w\" sizes=\"auto, (min-width: 1360px) 876px, (min-width: 960px) calc(61.58vw + 51px), calc(100vw - 80px)\" \/><\/li><\/ol>\n\n\n\n<p class=\"has-very-light-gray-color has-luminous-vivid-orange-background-color has-text-color has-background\"> For <strong>Outlook 2003<\/strong> or <strong>2007<\/strong>, you will need to click on <strong>Tools <\/strong>to get to the <strong>Options<\/strong> menu. From there, instead of <strong>Message Format <\/strong>you will need to find <strong>Mail Format<\/strong>. Here you can select <strong>HTML <\/strong>or <strong>Plain text<\/strong> as per the instructions above.<\/p>\n\n\n\n<p>These changes are being made so that <strong>Outlook <\/strong>doesn\u2019t send or convert messages to <strong>Rich Text<\/strong>.  The instructions should work in recent versions of <strong>Outlook <\/strong>but won\u2019t work in <strong>Outlook 2016<\/strong> and <strong>2019 <\/strong>when emails are assigned to an address book entry. You can make changes to individual contact settings to help prevent sending the winmail.dat file as per the steps below.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"contacts\">Disable Winmail.dat for Individual Contacts<\/h2>\n\n\n\n<p>In order to make changes to individual contacts, you will need to be in an email that you are composing in <strong>Outlook<\/strong>. <\/p>\n\n\n\n<ol class=\"article_list wp-block-list\"><li> Go to the <strong>To:<\/strong> field and right-click on the email address you\u2019re sending to. <\/li><li> Select <strong>Open Outlook Properties<\/strong>. <\/li><li> Find <strong>Internet Format<\/strong>, then click on <strong>Send Plain text only<\/strong>. <\/li><li> Click on <strong>OK <\/strong>in order to save your changes. <\/li><\/ol>\n\n\n\n<p>In <strong>Outlook 2007<\/strong>, <strong>2010<\/strong>, and <strong>2013 <\/strong>you will need to go to the <strong>Outlook Contacts<\/strong>.  The steps are essentially the same as above, but you are simply not composing a message.  <\/p>\n\n\n\n<ol class=\"article_list wp-block-list\"><li> Search for the contact that you want to make sure that you\u2019re not sending a winmail.dat file. <\/li><li> Right-click on the contact (or double-click it). Select <strong>Open Outlook Properties<\/strong>.  <\/li><li> Find <strong>Internet Format<\/strong>, then click on <strong>Let Outlook decide the best sending format<\/strong> or  <strong>Send Plain text only<\/strong>. <\/li><li> Click on <strong>OK <\/strong>in order to save your changes. <\/li><\/ol>\n\n\n\n<p>That completes our guide on making changes to the <strong>Outlook <\/strong>email client so that you don\u2019t send a winmail.dat file.  For more information on email clients and many other topics, check out our <a href=\"https:\/\/www.inmotionhosting.com\/support\/email\/\">Email channel<\/a> in the <a href=\"https:\/\/www.inmotionhosting.com\/support\/\">InMotion Hosting Support Center<\/a>.<\/p>\n\n\n<div class=\"jumbotron\" style=\"text-align:center;\">\r\n<p style=\"font-size: 20px;\"><strong>Reliable Shared Hosting for Growing Businesses<\/strong><\/p>\r\n<p>Get the performance your business website demands with NVMe SSD storage, industry-standard cPanel management, and direct access to hosting experts whenever you need assistance.<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/design.inmotionhosting.com\/assets\/icons\/standard\/check-blue.svg\" alt=\"check mark\" width=\"24\" height=\"24\" \/>Free Website Migration &nbsp;&nbsp;&nbsp; <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/design.inmotionhosting.com\/assets\/icons\/standard\/check-blue.svg\" alt=\"check mark\" width=\"24\" height=\"24\" \/>24\/7 Human Support &nbsp;&nbsp;&nbsp; <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/design.inmotionhosting.com\/assets\/icons\/standard\/check-blue.svg\" alt=\"check mark\" width=\"24\" height=\"24\" \/>100% Money-Back Guarantee<\/p>\r\n<p><a class=\"btn btn-primary btn-lg\" href=\"https:\/\/www.inmotionhosting.com\/shared-hosting?mktgp=t&irgwc=1&affiliates=5001860&utm_campaign=Jumbotron&utm_source=supportcenter&utm_medium=cta&utm_term=shared-cta2\">Shared Hosting<\/a><\/p>\r\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft Outlook is a widely used email client that will often take emails that were created or formatted using Rich Text and then automatically store the formatting data into a file named winmail.dat. This file is then attached to the email that you are sending. You can avoid this by using HTML or Plain Text<a class=\"moretag\" href=\"https:\/\/www.inmotionhosting.com\/support\/email\/outlook\/prevent-winmaildat\/\"> Read More ><\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4367],"tags":[],"class_list":["post-2584","post","type-post","status-publish","format-standard","hentry","category-outlook"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Prevent Outlook from Sending the Winmail.dat File | InMotion Hosting<\/title>\n<meta name=\"description\" content=\"Learn to prevent recipients from receiving winamil.dat emails.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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