{"id":18289,"date":"2024-10-14T17:31:00","date_gmt":"2024-10-14T12:01:00","guid":{"rendered":"https:\/\/email.uplers.com\/blog\/?p=18289"},"modified":"2024-10-14T19:02:45","modified_gmt":"2024-10-14T13:32:45","slug":"subject-line-testers-to-use-or-not-to-use","status":"publish","type":"post","link":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/","title":{"rendered":"10 Free Email Subject Line Testers Your Marketing Team Can Use"},"content":{"rendered":"\n<p>The subject line, for all its simplicity, is far from simple.&nbsp;<\/p>\n\n\n\n<p>It\u2019s not easy to distill an email&#8217;s essence, let alone make it stand out. Crafting a killer subject line can be challenging, too.&nbsp;<\/p>\n\n\n\n<p>The vein popping up on the forehead \u2013 we get it! It\u2019s hard.&nbsp;<\/p>\n\n\n\n<p>Fortunately, you can rely on email subject line testers! Get a fast, objective analysis of your copy and also satisfy the writer\u2019s qualm.&nbsp;<\/p>\n\n\n\n<p>(You know, the old \u201cperfectionist\u2019s itch,\u201d boxing you in\u2026)<\/p>\n\n\n\n<p>This blog post offers a peek into the best 10 email subject line analyzers. Our team has explored these tools, and they fit the bill.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Below are the 10 subject line testing tools we\u2019ll be exploring, along with 10 amazing email subject line examples in the end:<br \/><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#Moosend\"><strong>Refine by Moosend<br \/><\/strong><\/a><\/li><li><a href=\"#Free-subjectline-tester\"><strong>Free Subject Line Tester<br \/><\/strong><\/a><\/li><li><a href=\"#Omnisend\"><strong>Subject Line Tester by Omnisend<br \/><\/strong><\/a><\/li><li><a href=\"#SubjectLine\"><strong>SubjectLine.com<br \/><\/strong><\/a><\/li><li><a href=\"#Zurb\"><strong>TestSubject by Zurb<br \/><\/strong><\/a><\/li><li><a href=\"#Grader\"><strong>Email Subject Line Grader<br \/><\/strong><\/a><\/li><li><a href=\"#CoSchedule\"><strong>CoSchedule<br \/><\/strong><\/a><\/li><li><a href=\"#AMI\"><strong>Headline Analyzer by AMI<br \/><\/strong><\/a><\/li><li><a href=\"#Postmark\"><strong>Spam Check by Postmark<br \/><\/strong><\/a><\/li><li><a href=\"#Copy-Analyzer\"><strong>Email Copy Analyzer<br \/><\/strong><\/a><\/li><li><a href=\"#Examples\"><strong>10 Examples of Well-tested Email Subject Lines<\/strong><\/a><\/li><\/ul>\n\n\n\n<p>(<strong><em>Note that the list is not arranged according to the merit of each tool, such that the first is the best and the last not so<\/em><\/strong><em>.<\/em>)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Moosend\">1. <strong>Refine by Moosend<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"606\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image4-2-1024x606.png\" alt=\"Moosend \" class=\"wp-image-41094\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image4-2-1024x606.png 1024w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image4-2-300x178.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image4-2-768x455.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image4-2-236x140.png 236w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image4-2-624x370.png 624w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image4-2.png 1062w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/moosend.com\/refine\/?utm_source=attrock&amp;utm_medium=blog&amp;utm_campaign=attrocksubjectlinetester\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>Refine by Moosend uses AI to \u201crefine\u201d your subject lines. The tool scores subject lines based on your industry, tells you their open potential, and offers recommendations to improve the subject line copy.\u00a0<br \/>Refine by Moosend is easy to use and very effective.\u00a0<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Free-subjectline-tester\">2. <strong>Free Subject Line Tester<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"929\" height=\"843\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image1-3.png\" alt=\"Free subject line tester\" class=\"wp-image-41095\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image1-3.png 929w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image1-3-300x272.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image1-3-768x697.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image1-3-154x140.png 154w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image1-3-624x566.png 624w\" sizes=\"auto, (max-width: 929px) 100vw, 929px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/www.emailtooltester.com\/en\/email-subject-lines-tester\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>The Free Subject Line Tester by Email Tool Tester not just analyzes subject lines but shows you how they\u2019ll look on various mobile devices.&nbsp;<\/p>\n\n\n\n<p>Currently, the tool supports iPhone 14, iPhone SE, iPad (10th Gen), Google Pixel 7, and Samsung S22 Ultra.\u00a0<br \/>The tool is super easy to use and displays the character count of every subject line you test. We say, go for it!\u00a0<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"banner_wrapper\" style=\"\"><div class=\"banner  banner-31660 bottom vert custom-banners-theme-default_style\" style=\"\"><a class=\"custom_banners_big_link\"  target=\"_blank\"  href=\"https:\/\/email.uplers.com\/email-marketing-campaign-management-services\/\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"200\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2022\/05\/1.-Email-marketing-campaigns.png\" class=\"attachment-full size-full\" alt=\"email marketing campaigns\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2022\/05\/1.-Email-marketing-campaigns.png 800w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2022\/05\/1.-Email-marketing-campaigns-300x75.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2022\/05\/1.-Email-marketing-campaigns-768x192.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2022\/05\/1.-Email-marketing-campaigns-624x156.png 624w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Omnisend\">3. <strong>Subject Line Tester by Omnisend<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"336\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image3-2-1024x336.png\" alt=\"Subject line tester\" class=\"wp-image-41096\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image3-2-1024x336.png 1024w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image3-2-300x98.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image3-2-768x252.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image3-2-624x204.png 624w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image3-2.png 1300w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/www.omnisend.com\/subject-line-tester\/?utm_source=attrock&amp;utm_medium=blog&amp;utm_campaign=attrocksubjectlinetester\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>The Subject Line Tester by Omnisend scores subject lines in percentages and analyzes punctuation, spammy words, and character and word length. The tool offers both mobile and desktop previews.<br \/>For us, the high point of Omnisend\u2019s tool is the anti-spam feature.\u00a0<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"SubjectLine\">4. <strong>SubjectLine.com\u00a0<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"362\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image5-2-1024x362.png\" alt=\"subjectline.com\" class=\"wp-image-41097\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image5-2-1024x362.png 1024w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image5-2-300x106.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image5-2-768x272.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image5-2-624x221.png 624w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image5-2.png 1448w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/subjectline.com\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>SubjectLine.com offers insights into your subject line, highlighting why it passed or failed. It scores your copy and gives a list of alternative lines.&nbsp;<\/p>\n\n\n\n<p>Significantly, it analyzes the urgency of the copy because that\u2019s a hallmark of a good subject line. Again, it\u2019s easy and fun to use.\u00a0<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Zurb\">5. <strong>TestSubject by Zurb<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"373\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image2-3-1024x373.png\" alt=\"zurb\" class=\"wp-image-41098\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image2-3-1024x373.png 1024w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image2-3-300x109.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image2-3-768x280.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image2-3-624x227.png 624w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image2-3.png 1062w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/zurb.com\/playground\/testsubject\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>This email subject line analyzer by Zurb tests how your subject line will appear on various devices, reviews preheader text, and also gives a preview of the sender name on the most popular mobile devices.&nbsp;<\/p>\n\n\n\n<p>It currently supports iPhone 6, iPhone 6 Plus, and Samsung Galaxy Note 5.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Grader\">6. <strong>Email Subject Line Grader<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1022\" height=\"499\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image10.png\" alt=\"Net atlantic\" class=\"wp-image-41099\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image10.png 1022w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image10-300x146.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image10-768x375.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image10-287x140.png 287w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image10-624x305.png 624w\" sizes=\"auto, (max-width: 1022px) 100vw, 1022px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"http:\/\/emailsubjectlinegrader.com\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>Email Subject Line Grader by Net Atlantic scores your subject line, gives you the word and character count, and also evaluates word mixture and balance.\u00a0<br \/>The high point of this tool is the focus on \u201caction words.\u201d The use of action words can make subject lines super-compelling. The tool rates the use of these words in percentage. It\u2019s easy to use and quite revelatory.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"CoSchedule\">7. <strong>CoSchedule\u00a0<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"451\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image9-1-1024x451.png\" alt=\"coschedule\" class=\"wp-image-41100\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image9-1-1024x451.png 1024w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image9-1-300x132.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image9-1-768x339.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image9-1-624x275.png 624w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image9-1.png 1243w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/coschedule.com\/email-subject-line-tester?utm_source=attrock&amp;utm_medium=blog&amp;utm_campaign=attrocksubjectlinetester\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>CoSchedule\u2019s email subject tester is the only one on this list that factors in emojis while analyzing subject lines.\u00a0<br \/>The tool offers both mobile and desktop previews.\u00a0<\/p>\n\n\n\n<p>\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"AMI\">8. <strong>Headline Analyzer by AMI<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"375\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image6-1-1024x375.png\" alt=\"Headline Analyzer by AMI\n\" class=\"wp-image-41101\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image6-1-1024x375.png 1024w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image6-1-300x110.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image6-1-768x281.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image6-1-1536x562.png 1536w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image6-1-624x228.png 624w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image6-1.png 1542w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/aminstitute.com\/headline\/?utm_source=attrock&amp;utm_medium=blog&amp;utm_campaign=attrocksubjectlinetester\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>The Headline Analyzer by Advanced Marketing Institute is technically an email headline tester. But you can use it to test subject line copy.\u00a0<br \/>The Analyzer\u2019s highlight is that it evaluates the emotional value of your copy. Depending on the words used, it categorizes your copy by different types of emotion. The only turn-off? Enough with those ads already!\u00a0<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Postmark\">9. <strong>Spam Check by Postmark<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"897\" height=\"739\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image7-1.png\" alt=\"Spam Check by Postmark\" class=\"wp-image-41102\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image7-1.png 897w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image7-1-300x247.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image7-1-768x633.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image7-1-170x140.png 170w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image7-1-624x514.png 624w\" sizes=\"auto, (max-width: 897px) 100vw, 897px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/spamcheck.postmarkapp.com\/?utm_source=attrock&amp;utm_medium=blog&amp;utm_campaign=attrocksubjectlinetester\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source<\/a><\/p>\n\n\n\n<p>Are you absolutely sure that your email copy isn\u2019t spammy?<\/p>\n\n\n\n<p><br \/>Sign into Spam Check to evaluate your subject line, preheader text, and email copy, and be sure. It goes beyond just spammy words. Which is in line with how inbox service providers (ISPs) are evolving.\u00a0<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"banner_wrapper\" style=\"\"><div class=\"banner  banner-29522 bottom vert custom-banners-theme-default_style\" style=\"\"><a class=\"custom_banners_big_link\"  target=\"_blank\"  href=\"https:\/\/email.uplers.com\/email-marketing-automation-experts-specialist\/\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"220\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2021\/12\/4-1.png\" class=\"attachment-full size-full\" alt=\"email marketing automation experts specialist\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2021\/12\/4-1.png 800w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2021\/12\/4-1-300x83.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2021\/12\/4-1-768x211.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2021\/12\/4-1-624x172.png 624w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/div><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Copy-Analyzer\">10. <strong>Email Copy Analyzer<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-image border1-black\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"567\" src=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image8-1-1024x567.png\" alt=\"Email Copy Analyzer\" class=\"wp-image-41103\" srcset=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image8-1-1024x567.png 1024w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image8-1-300x166.png 300w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image8-1-768x425.png 768w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image8-1-253x140.png 253w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image8-1-624x346.png 624w, https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2024\/10\/image8-1.png 1300w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/mailshake.com\/email-analyzer\/?utm_source=attrock&amp;utm_medium=blog&amp;utm_campaign=attrocksubjectlinetester\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Image source\u00a0<\/a><\/p>\n\n\n\n<p>Email Copy Analyzer by Mailshake offers more than subject line testing, in fact you can use it to run email campaigns as well.&nbsp;<\/p>\n\n\n\n<p>But coming to subject lines, it tests your copy for length, spam, readability, and personalization. As an extension of this, you can A\/B-test your subject lines as well to see which variant performs better.\u00a0<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Examples\"><strong>10 Examples of Well-tested Email Subject Lines<\/strong><\/h2>\n\n\n\n<p>The following are some of our latest favorite email subject lines:<br \/><\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>This subject line could be better. Here\u2019s how<\/strong>, by <a href=\"https:\/\/reallygoodemails.com\/emails\/this-subject-line-could-be-better-here-s-how\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">MailPoet<\/a>.<br \/><\/li><li><strong>[insert dad joke]<\/strong>, by <a href=\"https:\/\/emaillove.com\/turo-email-design-2\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Turo<\/a>.<br \/><\/li><li><strong>As SEEN in the Press \ud83d\udc40<\/strong>, by <a href=\"https:\/\/emaillove.com\/seen-email-design-3\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Seen<\/a>.<br \/><\/li><li><strong>SAY HI TO *GRAZOLA* \ud83e\udd63<\/strong>, by <a href=\"https:\/\/reallygoodemails.com\/emails\/say-hi-to-grazola\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Graza<\/a>.<br \/><\/li><li><strong>NEW, NOW<\/strong>, by <a href=\"https:\/\/milled.com\/alpnrock.com\/new-now-fo-8vHlMA9vi9QoM\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Alp N Rock<\/a>.\u00a0<br \/><\/li><li><strong>United Sodas upgrade loading&#8230; \ud83d\udfe9\ud83d\udfe9\ud83d\udfe9\u2b1c\ufe0f<\/strong>, by <a href=\"https:\/\/emaillove.com\/united-sodas-email-design-5\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">United Sodas<br \/><\/a><\/li><li><strong>CAUGHT YA<\/strong>, by <a href=\"https:\/\/emaillove.com\/halfdays-email-design-3\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Halfdays<\/a>.\u00a0<\/li><\/ol>\n\n\n\n<ol class=\"wp-block-list\" start=\"8\"><li><strong>\ud83d\udeb6 Ah sh*t, here we go again<\/strong>, by <a href=\"https:\/\/reallygoodemails.com\/emails\/ah-sht-here-we-go-again\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Cleo<\/a>.\u00a0<\/li><\/ol>\n\n\n\n<ol class=\"wp-block-list\" start=\"9\"><li><strong>Our new product sucks\u2026<\/strong>, by <a href=\"https:\/\/reallygoodemails.com\/emails\/our-new-product-sucks\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Fellow<\/a>.<br \/><\/li><li><strong>Have an Ice Day!<\/strong> \ud83c\udf66, by <a href=\"https:\/\/app.mailcharts.com\/emails\/65118ca4-6b38-a83b-b49d-6677a79a96a8?list_id=3590\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">DesignbyHumans<br \/><\/a><\/li><\/ol>\n\n\n\n<p>Admittedly, <a href=\"https:\/\/www.emailmarketingrules.com\/outstanding-email-marketing-examples-of-subject-lines\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">these subject lines<\/a> are contextual, urgent, emotional, detailed, intriguing, visual, and earned.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Test for Yourself, Create for People<\/strong><\/h2>\n\n\n\n<p>Kath Pay, email marketing expert and founder of Holistic Email Marketing, points out the \u201clongitudinal gains\u201d of email marketing.<\/p>\n\n\n\n<p>She contends that since email is a push channel, just showing up can be valuable. So, even if someone deletes your email, they couldn\u2019t have missed the subject line. This is not trivial; people may save your email for later or keep the information in mind. This is the nudge effect set in motion.<\/p>\n\n\n\n<p>As Pay cautions, \u201cDon\u2019t underestimate the power of your subject line \u2014 it can influence much more than a simple click.\u201d<\/p>\n\n\n\n<p>The email subject line testers we shared can help you sharpen your subject copy to not only generate opens but also trigger conversions.<\/p>\n\n\n\n<p>Speaking of, check out our top 100 holiday subject lines in 2024-25.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Your email subject line can make or break your campaigns. Take no risks. Get your email subject line tested on these expertly vetted testers.<\/p>\n","protected":false},"author":78,"featured_media":41104,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[236,1045,37,1046],"class_list":["post-18289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-marketing","tag-email-subject-lines","tag-subject-line-testers","tag-subject-lines","tag-testing-email-subject-lines"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Best 10 Free Email Subject Line Testers Every Marketer Should Know<\/title>\n<meta name=\"description\" content=\"Enhance your email marketing strategy with these 10 free subject line testing tools. Find the right tool to analyze, tweak and perfect your subject lines for maximum impact.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Best 10 Free Email Subject Line Testers Every Marketer Should Know\" \/>\n<meta property=\"og:description\" content=\"Enhance your email marketing strategy with these 10 free subject line testing tools. Find the right tool to analyze, tweak and perfect your subject lines for maximum impact.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/\" \/>\n<meta property=\"og:site_name\" content=\"Email Uplers\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/email.uplers\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-14T12:01:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-14T13:32:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use-540x282.png\" \/>\n\t<meta property=\"og:image:width\" content=\"540\" \/>\n\t<meta property=\"og:image:height\" content=\"282\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Susmit Panda\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@email_uplers\" \/>\n<meta name=\"twitter:site\" content=\"@email_uplers\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Susmit Panda\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/\",\"url\":\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/\",\"name\":\"Best 10 Free Email Subject Line Testers Every Marketer Should Know\",\"isPartOf\":{\"@id\":\"https:\/\/email.uplers.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use.png\",\"author\":{\"@id\":\"https:\/\/email.uplers.com\/blog\/#\/schema\/person\/24f62735fffd154f82f33d19d2eaacb3\"},\"description\":\"Enhance your email marketing strategy with these 10 free subject line testing tools. Find the right tool to analyze, tweak and perfect your subject lines for maximum impact.\",\"breadcrumb\":{\"@id\":\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#primaryimage\",\"url\":\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use.png\",\"contentUrl\":\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use.png\",\"width\":1170,\"height\":470,\"caption\":\"subject line testers\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/email.uplers.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"10 Free Email Subject Line Testers Your Marketing Team Can Use\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/email.uplers.com\/blog\/#website\",\"url\":\"https:\/\/email.uplers.com\/blog\/\",\"name\":\"Email Uplers\",\"description\":\"Email Marketing Blog\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/email.uplers.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/email.uplers.com\/blog\/#\/schema\/person\/24f62735fffd154f82f33d19d2eaacb3\",\"name\":\"Susmit Panda\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/email.uplers.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2023\/07\/Susmit-96x96.png\",\"contentUrl\":\"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2023\/07\/Susmit-96x96.png\",\"caption\":\"Susmit Panda\"},\"description\":\"A realist at heart and an idealist at head, Susmit is a content writer at Email Uplers. He has been in the digital marketing industry for half a decade. When not writing, he can be seen squinting at his Kindle, awestruck.\",\"sameAs\":[\"https:\/\/email.uplers.com\/\",\"https:\/\/www.linkedin.com\/in\/susmit-panda-965a1214a\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Best 10 Free Email Subject Line Testers Every Marketer Should Know","description":"Enhance your email marketing strategy with these 10 free subject line testing tools. Find the right tool to analyze, tweak and perfect your subject lines for maximum impact.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/","og_locale":"en_US","og_type":"article","og_title":"Best 10 Free Email Subject Line Testers Every Marketer Should Know","og_description":"Enhance your email marketing strategy with these 10 free subject line testing tools. Find the right tool to analyze, tweak and perfect your subject lines for maximum impact.","og_url":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/","og_site_name":"Email Uplers","article_publisher":"https:\/\/www.facebook.com\/email.uplers\/","article_published_time":"2024-10-14T12:01:00+00:00","article_modified_time":"2024-10-14T13:32:45+00:00","og_image":[{"width":540,"height":282,"url":"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use-540x282.png","type":"image\/png"}],"author":"Susmit Panda","twitter_card":"summary_large_image","twitter_creator":"@email_uplers","twitter_site":"@email_uplers","twitter_misc":{"Written by":"Susmit Panda","Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/","url":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/","name":"Best 10 Free Email Subject Line Testers Every Marketer Should Know","isPartOf":{"@id":"https:\/\/email.uplers.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#primaryimage"},"image":{"@id":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#primaryimage"},"thumbnailUrl":"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use.png","author":{"@id":"https:\/\/email.uplers.com\/blog\/#\/schema\/person\/24f62735fffd154f82f33d19d2eaacb3"},"description":"Enhance your email marketing strategy with these 10 free subject line testing tools. Find the right tool to analyze, tweak and perfect your subject lines for maximum impact.","breadcrumb":{"@id":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#primaryimage","url":"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use.png","contentUrl":"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2020\/02\/Subject-Line-Testers-To-Use-or-Not-to-Use.png","width":1170,"height":470,"caption":"subject line testers"},{"@type":"BreadcrumbList","@id":"https:\/\/email.uplers.com\/blog\/subject-line-testers-to-use-or-not-to-use\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/email.uplers.com\/blog\/"},{"@type":"ListItem","position":2,"name":"10 Free Email Subject Line Testers Your Marketing Team Can Use"}]},{"@type":"WebSite","@id":"https:\/\/email.uplers.com\/blog\/#website","url":"https:\/\/email.uplers.com\/blog\/","name":"Email Uplers","description":"Email Marketing Blog","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/email.uplers.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/email.uplers.com\/blog\/#\/schema\/person\/24f62735fffd154f82f33d19d2eaacb3","name":"Susmit Panda","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/email.uplers.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2023\/07\/Susmit-96x96.png","contentUrl":"https:\/\/email.uplers.com\/blog\/wp-content\/uploads\/2023\/07\/Susmit-96x96.png","caption":"Susmit Panda"},"description":"A realist at heart and an idealist at head, Susmit is a content writer at Email Uplers. He has been in the digital marketing industry for half a decade. When not writing, he can be seen squinting at his Kindle, awestruck.","sameAs":["https:\/\/email.uplers.com\/","https:\/\/www.linkedin.com\/in\/susmit-panda-965a1214a\/"]}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/posts\/18289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/users\/78"}],"replies":[{"embeddable":true,"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/comments?post=18289"}],"version-history":[{"count":19,"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/posts\/18289\/revisions"}],"predecessor-version":[{"id":41105,"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/posts\/18289\/revisions\/41105"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/media\/41104"}],"wp:attachment":[{"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/media?parent=18289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/categories?post=18289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/email.uplers.com\/blog\/wp-json\/wp\/v2\/tags?post=18289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}