{"id":3427,"date":"2022-12-27T07:23:20","date_gmt":"2022-12-27T07:23:20","guid":{"rendered":"https:\/\/www.emailtechnicalsupport.us\/blog\/?p=3427"},"modified":"2022-12-27T07:23:20","modified_gmt":"2022-12-27T07:23:20","slug":"thunderbird-wont-send-email","status":"publish","type":"post","link":"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/","title":{"rendered":"Proven Fixes for Thunderbird Won\u2019t Send Email Problem"},"content":{"rendered":"<p>Thunderbird, a Mozilla Firefox creation, allows users to manage their emails, chats, and newsgroups. However, email problems with it are also common. Sometimes you may find that <strong>Thunderbird won\u2019t send email<\/strong>. This SMTP error can be fixed by checking the service settings, updating Mozilla Thunderbird, and resetting the SMTP password.<\/p>\n<p>You must troubleshoot the inappropriate Thunderbird settings to fix this email-sending issue. Also, contact your internet service provider if they\u2019ve blocked your outgoing emails on ports like port 25. Keep reading to find effective fixes for this Thunderbird email issue.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 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 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Troubleshooting_for_Thunderbird_Wont_Send_Email\" >Troubleshooting for Thunderbird Won\u2019t Send Email<\/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:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Verify_Thunderbird_SMTP_settings\" >Verify Thunderbird SMTP settings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Find_the_newest_release_of_Mozilla_Thunderbird\" >Find the newest release of Mozilla Thunderbird<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Delete_the_SMTP_password_and_reset_the_account\" >Delete the SMTP password and reset the account<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Check_if_the_outgoing_email_is_blocked\" >Check if the outgoing email is blocked<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Use_the_safe_mode\" >Use the safe mode<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Reinstall_Thunderbird\" >Reinstall Thunderbird<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Why_Thunderbird_wont_send_email\" >Why Thunderbird won\u2019t send email?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#How_to_set_up_outbound_SMTP_on_Thunderbird_91x\" >How to set up outbound SMTP on Thunderbird 91.x?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#How_to_fix_Thunderbird_update_problems\" >How to fix Thunderbird update problems?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/thunderbird-wont-send-email\/#Send_Emails_in_Thunderbird_Easily\" >Send Emails in Thunderbird Easily!<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Troubleshooting_for_Thunderbird_Wont_Send_Email\"><\/span><strong>Troubleshooting for Thunderbird Won\u2019t Send Email<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The solutions below have been proven to resolve this issue.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Verify_Thunderbird_SMTP_settings\"><\/span>Verify Thunderbird SMTP settings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The outgoing or SMTP settings are essential to fix this issue with sending emails. Use these settings when you find <strong>Thunderbird unable to authenticate to outgoing server. <\/strong>Here\u2019s how to verify these settings.<\/p>\n<ol>\n<li>Open the Thunderbird application.<\/li>\n<li>Head to \u2018<strong>Tools<\/strong>\u2019 and choose the \u2018<strong>Account Settings<\/strong>\u2019 option.<\/li>\n<li>In the top-right portion, tap the setting bars.<\/li>\n<li>Now, tap \u2018<strong>Options<\/strong>\u2019 and choose \u2018<strong>Account Settings<\/strong>.\u2019<\/li>\n<li>From the left panel, select \u2018<strong>Outgoing Server<\/strong>\u2019 in the Account Setting wizard.<\/li>\n<li>After that, review your SMTP settings for your Thunderbird email account. They should be fully correct.<\/li>\n<li>To modify SMTP details, tap \u2018<strong>Edit<\/strong>.\u2019<\/li>\n<li>Head to the website of the email provider, here, choose \u2018<strong>Mail Settings<\/strong>\u2019 followed by \u2018<strong>SMTP<\/strong>.\u2019<\/li>\n<li>Lastly, see whether the Thunderbird settings align with the documented settings.<\/li>\n<\/ol>\n<blockquote><p>Also Read: <a href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/setup-gmail-in-thunderbird\/\">Setup Gmail In Thunderbird<\/a><\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Find_the_newest_release_of_Mozilla_Thunderbird\"><\/span>Find the newest release of Mozilla Thunderbird<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Thunderbird email not working <\/strong>can be the result of an outdated version of the app. Often it causes Thunderbird to freeze on the Windows system. Fix this issue by updating Thunderbird through these steps.<\/p>\n<ol>\n<li>Open the Thunderbird application.<\/li>\n<li>Now move to the \u2018<strong>Help<\/strong>\u2019 menu.<\/li>\n<li>Select the \u2018<strong>About Thunderbird<\/strong>\u2019 option.<\/li>\n<li>Thunderbird will begin checking for updates.<\/li>\n<li>When the updates are ready to install, choose \u2018<strong>Restart Thunderbird<\/strong>.\u2019<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Delete_the_SMTP_password_and_reset_the_account\"><\/span>Delete the SMTP password and reset the account<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>At this point, if still, <strong>Thunderbird cannot send email<\/strong>, reset the account password.<\/p>\n<ol>\n<li>Firstly, give yourself an email.<\/li>\n<li>If you get it, Thunderbird is working fine.<\/li>\n<li>Go to the three bars and select \u2018<strong>Tools<\/strong>.\u2019<\/li>\n<li>From the drop-down, choose \u2018<strong>Options<\/strong>.\u2019<\/li>\n<li>Hit the \u2018<strong>Security<\/strong>\u2019 icon in the Options Wizard.<\/li>\n<li>Click the \u2018<strong>Saved Passwords<\/strong>\u2019 button.<\/li>\n<li>Tap \u2018<strong>OK<\/strong>.\u2019<\/li>\n<li>Now, remove your SMTP password.<\/li>\n<li>Reset the Thunderbird email account and check if it can send emails.<\/li>\n<li>Head to your ISP site and click the \u2018<strong>Reset Password<\/strong>\u2019 button.<\/li>\n<li>Modify the password.<\/li>\n<li>Add it to your Thunderbird.<\/li>\n<li>Now, you won\u2019t find <strong>Thunderbird stuck on sending message<\/strong>.<\/li>\n<\/ol>\n<blockquote><p>Also Read: <a href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/aol-imap-settings\/\">Configure AOL IMAP Settings &amp; SMTP Settings<\/a><\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Check_if_the_outgoing_email_is_blocked\"><\/span>Check if the outgoing email is blocked<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sometimes, a firewall, antivirus, or your internet service provider blocks the outgoing email. It results in the <strong>Thunderbird email not working<\/strong>. Check this issue with these points.<\/p>\n<ol>\n<li>Turn off the security software on your system.<\/li>\n<li>Send a test email from your account.<\/li>\n<li>Turn off the antivirus and send another test email.<\/li>\n<li>If you cannot send it, disable the antivirus.<\/li>\n<li>Next, check if your ISP has blocked outgoing emails on port 25.<\/li>\n<li>If yes, use another port like 587.<\/li>\n<li>Use the outgoing server as smtpauth.earthlink.net and port 587.<\/li>\n<li>The connection security is STARTTLS, and authentication is through a normal password.<\/li>\n<li>These settings will also resolve <strong>Thunderbird unable to authenticate to outgoing server<\/strong>.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Use_the_safe_mode\"><\/span>Use the safe mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The safe mode option is another simple yet effective fix for this issue. Use it to reset settings. Here is how to launch it.<\/p>\n<ol>\n<li>Hit the Alt option key.<\/li>\n<li>Now tap the Thunderbird icon to open it.<\/li>\n<li>If Thunderbird is already running, switch to safe mode by choosing \u2018<strong>Restart with add-ons disables\u2026<\/strong><\/li>\n<li>This option is there in the \u2018<strong>Help<\/strong>\u2019 menu.<\/li>\n<li>When the safe mode dialog shows up, tap \u2018<strong>Continue in safe mode<\/strong>.\u2019<\/li>\n<\/ol>\n<p>You can also go further and disable Thunderbird&#8217;s add-ons in safe mode. Perform the measures above. The only change is in the dialog box, where you must check the \u2018<strong>Disable all add-ons<\/strong>\u2019 option. Finally, hit \u2018<strong>Make changes and restart<\/strong>.\u2019<\/p>\n<blockquote><p>Also Read: <a href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/aol-pop-settings\/\">Sync AOL Mail Using AOL POP Settings<\/a><\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Reinstall_Thunderbird\"><\/span>Reinstall Thunderbird<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>You may also find <strong>Thunderbird stuck on sending messages<\/strong> if the app\u2019s files are corrupted. To make the application functional again, reinstall it.<\/p>\n<ol>\n<li>Access the Windows \u2018<strong>Start<\/strong>\u2019 button.<\/li>\n<li>From here, navigate to the Control Panel.<\/li>\n<li>In the \u2018<strong>Programs<\/strong>\u2019 section, tap \u2018<strong>Uninstall a program<\/strong>.\u2019<\/li>\n<li>Now you\u2019ll see the list of every single program on your computer.<\/li>\n<li>Choose \u2018<strong>Mozilla Thunderbird<\/strong>\u2019 and tap \u2018<strong>Uninstall<\/strong>.\u2019<\/li>\n<li>To confirm this action, tap \u2018<strong>Yes<\/strong>.\u2019<\/li>\n<li>Now, abide by the guidelines on your screen to uninstall the app.<\/li>\n<li>After that, head to the official Mozilla Thunderbird website.<\/li>\n<li>From here, download the Thunderbird installer.<\/li>\n<li>Double-tap the installer to begin the installation.<\/li>\n<li>Finally, adhere to the guidelines on your screen to reinstall Thunderbird.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Why_Thunderbird_wont_send_email\"><\/span>Why Thunderbird won\u2019t send email?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Many factors can be behind this issue. You cannot send emails from Thunderbird because of the following.<\/p>\n<ol>\n<li>The Thunderbird application is not updated.<\/li>\n<li>SMTP email settings are incorrect.<\/li>\n<li>The outgoing email server has been blocked.<\/li>\n<li>Your mail server does not support the TLS version.<\/li>\n<li>You need to change your SMTP password.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"How_to_set_up_outbound_SMTP_on_Thunderbird_91x\"><\/span>How to set up outbound SMTP on Thunderbird 91.x?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>You can easily configure Thunderbird 91.x and send emails.<\/p>\n<ol>\n<li>Open Thunderbird on the desktop.<\/li>\n<li>Right-tap on your account and choose \u2018<strong>Settings<\/strong>.\u2019<\/li>\n<li>The \u2018<strong>Account Settings<\/strong>\u2019 tab will appear.<\/li>\n<li>Choose \u2018<strong>Outgoing Server<\/strong>.\u2019<\/li>\n<li>choose your account and select \u2018<strong>Edit<\/strong>.\u2019<\/li>\n<li>In the SMTP server window, enter a description and the server name.<\/li>\n<li>Set the right port and the connection security as STARTTLS.<\/li>\n<li>Input your password as authentication.<\/li>\n<li>Exit the \u2018<strong>Account Settings<\/strong>\u2019 tab.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"How_to_fix_Thunderbird_update_problems\"><\/span>How to fix Thunderbird update problems?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The update problems in Thunderbird can be resolved with these measures.<\/p>\n<ol>\n<li>Ensure that you are the only user logged into the system when updating Thunderbird.<\/li>\n<li>Use the task manager and pick the \u2018<strong>Processes<\/strong>\u2019 tab.<\/li>\n<li>Choose the Thunderbird.exe entry and click \u2018<strong>End Process<\/strong>.\u2019<\/li>\n<li>Select \u2018<strong>Task Manager<\/strong>\u2019 and choose the \u2018<strong>Services<\/strong>\u2019 tab.<\/li>\n<li>Start the AeLookupSvc-Application Experience service.<\/li>\n<li>Hit Windows and input \u2018msconfig.\u2019<\/li>\n<li>Choose the \u2018<strong>Services<\/strong>\u2019 tab and ensure that \u2018<strong>Application Experience<\/strong>\u2019 is enabled.<\/li>\n<li>Tap \u2018<strong>OK<\/strong>.\u2019<\/li>\n<li>Restart the system.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Send_Emails_in_Thunderbird_Easily\"><\/span>Send Emails in Thunderbird Easily!<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>These are the best measures to use when you find <strong>Thunderbird won\u2019t send email<\/strong>. The measures are easy as they mainly involve correcting the <a href=\"https:\/\/www.emailtechnicalsupport.us\/blog\/aol-imap-settings\/\">email server settings<\/a>. But if you still cannot use the Thunderbird account, contact an email technical support expert.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thunderbird, a Mozilla Firefox creation, allows users to manage their emails, chats, and newsgroups. However, email problems with it are also common. Sometimes you may find that Thunderbird won\u2019t send email. This SMTP error can be fixed by checking the service settings, updating Mozilla Thunderbird, and resetting the SMTP password. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":3428,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Fix Thunderbird Won\u2019t Send Email on Desktop?<\/title>\n<meta name=\"description\" content=\"You may find that Thunderbird won\u2019t send email because of an obsolete app version or incorrect SMTP settings. Verify Thunderbird settings. 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Verify Thunderbird settings. 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