{"id":95683,"date":"2022-03-14T05:12:39","date_gmt":"2022-03-14T05:12:39","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=95683"},"modified":"2026-03-30T07:01:46","modified_gmt":"2026-03-30T07:01:46","slug":"thunderbird-importexporttools-ng-is-not-working","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/","title":{"rendered":"Thunderbird ImportExportTools NG Is Not Working: How to Fix It?"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>For instance, a user who wants to migrate from Apple Mail or any other MBOX-based email client to Thunderbird can import the MBOX file using the <a href=\"https:\/\/www.stellarinfo.com\/article\/how-to-use-import-export-ng-tools.php\" target=\"_blank\" rel=\"noreferrer noopener\">ImportExportTools NG<\/a>. Similarly, users can also view email (EML) files copied from the Outlook client in Thunderbird.<\/p><p>But recently, there have been reports that the ImportExportTools NG add-on is not working for some users. As a result, they can&rsquo;t export or import the MBOX files or view EML files in Thunderbird.<\/p><p>This article explains solutions to fix the ImportExportTools NG add-on not working issue and helps you <a href=\"https:\/\/www.stellarinfo.com\/blog\/import-mbox-file-into-thunderbird\/\" target=\"_blank\" rel=\"noreferrer noopener\">import\/export the MBOX files in Thunderbird<\/a>.<\/p><h2 class=\"wp-block-heading\" id=\"solutions-to-fix-importexporttools-ng-add-on-not-working-issue\">Solutions to Fix ImportExportTools NG Add-On Not Working Issue<\/h2><p>After installing the ImportExportTools NG add-on in Thunderbird, if the Thunderbird import outlook is greyed out, ImportExportTools NG is not working, or the extension fails to export\/import the mail items to\/from MBOX files, follow these solutions.<\/p><h3 class=\"wp-block-heading\" id=\"h-1-configure-an-email-account\">Solution 1: Configure an Email Account in Thunderbird First<\/h3><p>It has been observed that some users who reported this issue were trying to import or open the MBOX files in Thunderbird directly, without adding or configuring an email account or mailbox. In such cases, the ImportExportTools NG is greyed out and doesn&rsquo;t allow users to perform any import.&nbsp;<\/p><p>To import or export messages using ImportExportTools NG, you must add a mailbox in Thunderbird. Once you have configured the email account, the ImportExportTools NG option that was greyed out will be available.<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"550\" height=\"275\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/import-export-mbox-file.png\" alt=\"import export mbox file\" class=\"wp-image-95685 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/import-export-mbox-file.png 550w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/import-export-mbox-file-300x150.png 300w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/><\/figure><p>You can right-click on any mail folder or your profile and choose the import or export option available in ImportExportTools NG to import or export an MBOX file.<\/p><h3 class=\"wp-block-heading\" id=\"h-2-reinstall-the-add-on\">Solution 2: Reinstall the ImportExportTools NG Add-On<\/h3><p>If you have recently updated the Thunderbird email client, you may experience issues with some previously installed add-ons, such as ImportExportTools NG. If that&rsquo;s the case, it is recommended to remove the add-on from the Thunderbird and install it again.<\/p><p>Even if you haven&rsquo;t updated the Thunderbird client, it&rsquo;s still recommended that you reinstall the add-on. This might fix the issue and allow you to import or export mail items in the Thunderbird client.<\/p><p><strong>To reinstall the add on, follow these steps:<\/strong><\/p><ul class=\"wp-block-list\">\n<li>Open Thunderbird and go to <strong>Tools &gt; Add-ons and Themes.<\/strong><\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"493\" height=\"113\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/install-importexporttoolsng-thunderbird-email-client.png\" alt=\"install importexporttoolsng  thunderbird email client\" class=\"wp-image-95686 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/install-importexporttoolsng-thunderbird-email-client.png 493w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/install-importexporttoolsng-thunderbird-email-client-300x69.png 300w\" sizes=\"auto, (max-width: 493px) 100vw, 493px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Find the <strong>ImportExportTools NG<\/strong> extension and click three dots. Choose <strong>Remove.<\/strong><\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"958\" height=\"312\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/remove-importexporttoolsng-from-thunderbird.png\" alt=\"remove importexporttoolsng from thunderbird\" class=\"wp-image-95687 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/remove-importexporttoolsng-from-thunderbird.png 958w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/remove-importexporttoolsng-from-thunderbird-300x98.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/remove-importexporttoolsng-from-thunderbird-768x250.png 768w\" sizes=\"auto, (max-width: 958px) 100vw, 958px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Confirm and click Remove again.<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"529\" height=\"127\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/confirm-removal-of-importexporttoolsng-from-thunderbird.png\" alt=\"confirm removal of importexporttoolsng from thunderbird\" class=\"wp-image-95688 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/confirm-removal-of-importexporttoolsng-from-thunderbird.png 529w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/confirm-removal-of-importexporttoolsng-from-thunderbird-300x72.png 300w\" sizes=\"auto, (max-width: 529px) 100vw, 529px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>After removing the add-on, go to Tools &gt; Add-ons and Themes and search for ImportExportTools NG.<\/li>\n\n\n\n<li>Click Add to Thunderbird.<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1007\" height=\"457\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/reinstall-importexporttoolsng-in-thunderbird.png\" alt=\"reinstall importexporttoolsng in thunderbird\" class=\"wp-image-95689 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/reinstall-importexporttoolsng-in-thunderbird.png 1007w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/reinstall-importexporttoolsng-in-thunderbird-300x136.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/reinstall-importexporttoolsng-in-thunderbird-768x349.png 768w\" sizes=\"auto, (max-width: 1007px) 100vw, 1007px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Click Add to confirm and install the add-on.<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"426\" height=\"205\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/click-add-to-install-imporexporttoolsng.png\" alt=\"click add to install imporexporttoolsng\" class=\"wp-image-95690 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/click-add-to-install-imporexporttoolsng.png 426w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/click-add-to-install-imporexporttoolsng-300x144.png 300w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><\/figure><p>Once installed, restart the Thunderbird client and then try using the add-on to import or export the mail items to or from an MBOX file in Thunderbird.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/cloud.stellarinfo.com\/StellarConverterforMBOX-Corporate-B.exe\"><img loading=\"lazy\" decoding=\"async\" width=\"226\" height=\"62\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/01\/Free-download-for-windows-1.png\" alt=\"\" class=\"wp-image-122415 apply-gradient-on-post-images\"><\/a><\/figure>\n<\/div><h2 class=\"wp-block-heading\" id=\"alterative-solution-&ndash;-use-an-mbox-converter-software\"><strong>Alterative Solution &ndash; Use an MBOX Converter Software<\/strong><\/h2><p>An MBOX converter software, such as <a href=\"https:\/\/www.stellarinfo.com\/email-tools\/mbox-to-pst-converter.php\" target=\"_blank\" rel=\"noreferrer noopener\">Stellar Converter for MBOX<\/a> can help in such a situation. Thunderbird saves the mail items in MBOX format but in an identity folder. However, the software provides you with the option to choose an MBOX file or identity folder containing MBOX files for the scan.<\/p><figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/public\/image\/catalog\/screenshot\/mbox-to-pst\/Stellar-Converter-for-MBOX-User-Interface-1.jpg\" alt=\"select mbox file for pst conversion\"><\/figure><p>After the scan, it displays an enhanced preview of all mail items.<\/p><figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/public\/image\/catalog\/screenshot\/mbox-to-pst\/Stellar-Converter-for-MBOX--Scanning-Complete-4.jpg\" alt=\"preview mail items from converted mbox files\"><\/figure><p>Further, it provides an option to export the mail items from the MBOX file or identity folder to Outlook importable PST format. You can choose to save the mail items in a new PST or export them to an existing Outlook PST file.<\/p><figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/public\/image\/catalog\/screenshot\/mbox-to-pst\/Stellar-Converter-for-MBOX--Preview-5.jpg\" alt=\"save mail items from mbox file to pst\"><\/figure><p>It also provides options to export the mail items from the Thunderbird email client to Office 365, PDF, RTF, and HTML formats.<\/p><p>The best part is that it supports 17+ MBOX-based email clients.<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"577\" height=\"490\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/09\/Stellar-Converter-for-MBOX-Home-Screen.png\" alt=\"Stellar Converter for MBOX Home Screen\" class=\"wp-image-148869 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/09\/Stellar-Converter-for-MBOX-Home-Screen.png 577w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/09\/Stellar-Converter-for-MBOX-Home-Screen-300x255.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/09\/Stellar-Converter-for-MBOX-Home-Screen-150x127.png 150w\" sizes=\"auto, (max-width: 577px) 100vw, 577px\" \/><\/figure><h2 class=\"wp-block-heading\" id=\"why-consider-switching-from-thunderbird-to-outlook?\">Why Consider Switching from Thunderbird to Outlook?<\/h2><p>ImportExportTools NG is a handy Thunderbird add-on widely used to import and export mail items. You can also use it to view email files, such as EML or EMLX. However, if you are planning to move from a Thunderbird email client to Outlook, you need to <a href=\"https:\/\/www.stellarinfo.com\/email-tools\/mbox-to-pst-converter.php\" target=\"_blank\" rel=\"noreferrer noopener\">convert MBOX to PST<\/a> format. <strong>Stellar Converter for MBOX<\/strong> is one such software that can help you quickly move to Outlook or Office 365. You can download the demo version for free to get started and evaluate the software.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For instance, a user who wants to migrate from Apple Mail or&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/\">Continue reading <span class=\"screen-reader-text\">Thunderbird ImportExportTools NG Is Not Working: How to Fix It?<\/span><\/a><\/p>\n","protected":false},"author":32,"featured_media":95696,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[838],"tags":[],"class_list":["post-95683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mbox-file","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Thunderbird ImportExportTools NG Not Working? Here&#039;s the Fix<\/title>\n<meta name=\"description\" content=\"ImportExportTools NG not working in Thunderbird? Fix greyed-out options and import\/export failures with these 2 quick solutions.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thunderbird ImportExportTools NG Not Working? Here&#039;s the Fix\" \/>\n<meta property=\"og:description\" content=\"ImportExportTools NG not working in Thunderbird? Fix greyed-out options and import\/export failures with these 2 quick solutions.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/\" \/>\n<meta property=\"og:site_name\" content=\"Stellar Data Recovery Blog\" \/>\n<meta property=\"article:author\" content=\"https:\/\/facebook.com\/raavisingh\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-14T05:12:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-30T07:01:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/Thunderbird-ImportExportTools-NG-is-Not-Working.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Ravi Singh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/ravi51ngh\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ravi Singh\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/\"},\"author\":{\"name\":\"Ravi Singh\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/7dea10d15c0307370e21d7da07d0cd11\"},\"headline\":\"Thunderbird ImportExportTools NG Is Not Working: How to Fix It?\",\"datePublished\":\"2022-03-14T05:12:39+00:00\",\"dateModified\":\"2026-03-30T07:01:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/\"},\"wordCount\":687,\"image\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2022\/03\/Thunderbird-ImportExportTools-NG-is-Not-Working.jpg\",\"articleSection\":[\"MBOX to PST Converter\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/\",\"url\":\"https:\/\/www.stellarinfo.com\/blog\/thunderbird-importexporttools-ng-is-not-working\/\",\"name\":\"Thunderbird ImportExportTools NG Not Working? 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