{"id":5666,"date":"2026-01-05T15:05:57","date_gmt":"2026-01-05T14:05:57","guid":{"rendered":"https:\/\/wpmastertoolkit.com\/?p=5666"},"modified":"2026-01-13T09:41:09","modified_gmt":"2026-01-13T08:41:09","slug":"comment-configurer-mailersend-comme-smtp-sur-wordpress-avec-wpmastertoolkit","status":"publish","type":"post","link":"https:\/\/wpmastertoolkit.com\/en\/5666-autosave-v1\/","title":{"rendered":"How to configure MailerSend as SMTP on WordPress with WPMasterToolKit"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>Introduction<\/strong><\/h2>\n\n\n\n<p>Reliable e-mail delivery is crucial for any WordPress site. Whether it's to confirm a registration, receive form notifications or manage password resets, your emails need to arrive at their destination. Unfortunately, the default configuration of WordPress, which uses the PHP <code data-no-auto-translation=\"\">mail()<\/code>is often unreliable and may be blocked by some hosts.<\/p>\n\n\n\n<p>To guarantee optimum deliverability, the use of a <strong>SMTP<\/strong> is the recommended solution. <strong>MailerSend<\/strong>a service <strong>SMTP<\/strong> allows you to send your WordPress emails securely, quickly and reliably. In this tutorial, we'll show you step-by-step how to configure <strong>MailerSend<\/strong> as a server <strong>SMTP<\/strong> on WordPress using <strong>WPMasterToolKit<\/strong>so your e-mails always reach your users without a hitch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is MailerSend?<\/strong><\/h2>\n\n\n\n<p><strong>MailerSend<\/strong> is a complete e-mailing service, combining a powerful infrastructure with advanced marketing features. Companies all over the world rely on it to manage both transactional and marketing e-mails, while guaranteeing an excellent deliverability rate.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cost :<\/strong> <strong>MailerSend<\/strong> offers a free plan including up to <strong>3 000<\/strong> e-mails per month (with a daily limit of 1,000 e-mails). Paid plans offer higher sending limits and additional features such as live support, A\/B testing and advanced analytics.<\/li>\n\n\n\n<li><strong>Sending e-mail requirements :<\/strong> You will need to use an e-mail address associated with your domain (for example, <a>vous@votredomaine.com<\/a>) to use <strong>MailerSend<\/strong> with WPMasterToolKit.<\/li>\n\n\n\n<li><strong>In a nutshell:<\/strong> <strong>MailerSend<\/strong> is an excellent choice for businesses of all sizes, offering a scalable e-mail infrastructure combined with powerful marketing features.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Note:<\/strong> To find out more about compatible messaging services, visit the <strong>complete guide to mailers in WPMasterToolKit<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Setting up your MailerSend account<\/strong><\/h2>\n\n\n\n<p>To get started, you'll need to create an account <strong>MailerSend<\/strong> (if you don't already have one). To do so, go to <strong>MailerSend price list page<\/strong> and choose the plan that best suits your needs.<\/p>\n\n\n\n<p>In our example, we will use the <strong>free plan<\/strong>. However, the configuration process remains the same, whatever plan you choose.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img alt=\"\" fetchpriority=\"high\" decoding=\"async\" width=\"989\" height=\"540\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-47.png\" class=\"wp-image-5672\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-47.png 989w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-47-300x164.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-47-768x419.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-47-18x10.png 18w\" sizes=\"(max-width: 989px) 100vw, 989px\" \/><\/figure>\n\n\n\n<p>After registering and validating your e-mail address, you will be redirected to the <strong>MailerSend account dashboard<\/strong>where you can start configuring your account.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Authorize your domain<\/strong><\/h2>\n\n\n\n<p><strong>MailerSend<\/strong> provides test logins to try out its e-mail service. You can use them if you want to test e-mail delivery before adding your own domain.<\/p>\n\n\n\n<p>In this tutorial, we'll skip this step and go straight to adding a <strong>shipping area<\/strong>. This procedure verifies that you are the owner of the domain used to send the e-mail, and helps improve the deliverability of your e-mails.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Add your sending domain<\/strong><\/h2>\n\n\n\n<p>To add a sending domain, log in to your account <strong>MailerSend<\/strong>then go to <strong>Email \" Domains<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2780<\/mark><\/strong>.<\/p>\n\n\n\n<p>Here you can see the details of your <strong>test area<\/strong>. To add a new domain, click on the <strong>Add domain<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2781<\/mark><\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" decoding=\"async\" width=\"1024\" height=\"427\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-51-1024x427.png\" class=\"wp-image-5687\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-51-1024x427.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-51-300x125.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-51-768x320.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-51-1536x640.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-51-2048x854.png 2048w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-51-18x8.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>In the window that appears, enter your domain name, then click on <strong>Add domain<\/strong> to continue.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" decoding=\"async\" width=\"1024\" height=\"710\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-50-1024x710.png\" class=\"wp-image-5684\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-50-1024x710.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-50-300x208.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-50-768x532.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-50-1536x1065.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-50-18x12.png 18w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-50.png 1558w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Then click on the <strong>Continue<\/strong> to move on to the next step.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"890\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-52-1024x890.png\" class=\"wp-image-5689\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-52-1024x890.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-52-300x261.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-52-768x668.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-52-14x12.png 14w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-52.png 1488w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Manually check your sending domain<\/strong><\/h2>\n\n\n\n<p><strong>MailerSend<\/strong> will provide you <strong>3 DNS records<\/strong> which you'll need to add to your domain settings.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"613\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-54-1024x613.png\" class=\"wp-image-5696\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-54-1024x613.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-54-300x179.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-54-768x459.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-54-18x12.png 18w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-54.png 1090w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>We offer a detailed guide to locating and adding DNS records at various domain registrars. See our <strong>tutorial to learn how to add DNS records for WPMasterToolKit mailer settings<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V<strong>Check your DNS records<\/strong><\/h2>\n\n\n\n<p>After adding the DNS records, you'll need to wait a few minutes for the changes to propagate. Note that in some cases, this can take up to 48 hours.<\/p>\n\n\n\n<p>Then scroll down the page and tick the box <strong>I have added DNS records<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2780<\/mark><\/strong>.<\/p>\n\n\n\n<p>Then click on the <strong>Finish verification<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2781<\/mark><\/strong> to continue.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"446\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-55-1024x446.png\" class=\"wp-image-5702\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-55-1024x446.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-55-300x131.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-55-768x334.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-55-1536x669.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-55-18x8.png 18w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-55.png 1768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>If your recordings <strong>DNS<\/strong> are correctly propagated, you will see the status <strong>Verified<\/strong> next to your domain.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"480\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-56-1024x480.png\" class=\"wp-image-5706\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-56-1024x480.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-56-300x141.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-56-768x360.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-56-1536x720.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-56-2048x960.png 2048w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-56-18x8.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>However, there's no need to wait for this verification just yet! You can move on to the next step while the verification is being completed. Just make sure you <strong>leave this tab or window open<\/strong>We'll need it later.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Configure WPMasterToolKit<\/strong><\/h2>\n\n\n\n<p>Now that your account <strong>MailerSend<\/strong> is set up and your domain is verified, you can configure <strong>WPMasterToolKit<\/strong> to use <strong>MailerSend<\/strong> to send your WordPress emails.<\/p>\n\n\n\n<p>Before starting this section, make sure you have <strong>installed and activated the WPMasterToolKit plugin<\/strong>.<\/p>\n\n\n\n<p>Once WPMasterToolKit is installed, go to <strong>WPMasterToolKit \" Settings<\/strong> and select the <strong>General<\/strong> to open the plugin settings page.<\/p>\n\n\n\n<p>We'll explain each of these parameters in detail below.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>From Email<\/strong><\/h2>\n\n\n\n<p>Visit <strong>From Email<\/strong> is the address from which e-mails from your site will be sent. This address must be linked to the <strong>domain you have checked with MailerSend<\/strong>.<\/p>\n\n\n\n<p>For example, if you have authorized <strong>example.com<\/strong>the From Email address must include this domain.<\/p>\n\n\n\n<p>By default, the <strong>From Name<\/strong> will correspond to the name of your site. However, you can modify it and add the text of your choice.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"914\" height=\"319\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-57.png\" class=\"wp-image-5710\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-57.png 914w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-57-300x105.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-57-768x268.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-57-18x6.png 18w\" sizes=\"(max-width: 914px) 100vw, 914px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">MailerSend API key<\/h2>\n\n\n\n<p>To create your API key, click on the link <strong>Get API Key<\/strong>.<\/p>\n\n\n\n<p>Alternatively, you can access this page from your account <strong>MailerSend<\/strong> by visiting the <strong>Integrations<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2780<\/mark><\/strong>.<\/p>\n\n\n\n<p>Then click on the <strong>Manage<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2781<\/mark><\/strong> next to <strong>API tokens<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"421\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-58-1024x421.png\" class=\"wp-image-5715\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-58-1024x421.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-58-300x123.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-58-768x316.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-58-1536x632.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-58-2048x843.png 2048w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-58-18x7.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>On screen <strong>API tokens<\/strong>button, you'll see all your available API keys. To create a new one, click on the <strong>Create new token<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"442\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-59-1024x442.png\" class=\"wp-image-5717\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-59-1024x442.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-59-300x130.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-59-768x332.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-59-1536x663.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-59-2048x884.png 2048w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-59-18x8.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>On page <strong>New API token<\/strong>you'll need to give a <strong>name<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2780<\/mark><\/strong> to your token. This has only one <strong>internal purpose<\/strong>You can choose any name you like.<\/p>\n\n\n\n<p>Then select the <strong>domain <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2781<\/mark><\/strong> your site<\/strong> if you wish to restrict the use of this <strong>API key<\/strong>.<\/p>\n\n\n\n<p>In the <strong>Expiration date<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2782<\/mark><\/strong>Then select a future date, e.g. a validity of 1 or 2 years. If you don't specify a date, the API token will automatically expire after <em><strong>24 heures<\/strong><\/em>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"610\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-60-1024x610.png\" class=\"wp-image-5719\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-60-1024x610.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-60-300x179.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-60-768x458.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-60-1536x916.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-60-2048x1221.png 2048w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-60-18x12.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>You can leave the <strong>Permissions<\/strong> on <strong>Sending access<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2780<\/mark><\/strong>. This means that this API token will only allow you to send e-mails.<\/p>\n\n\n\n<p>When finished, click on the <strong>Generate token<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2781<\/mark><\/strong> to create your API key.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"540\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-61-1024x540.png\" class=\"wp-image-5722\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-61-1024x540.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-61-300x158.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-61-768x405.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-61-1536x809.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-61-18x9.png 18w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-61.png 1598w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>This will generate an API token for your account. Click on the generated token to <strong>copy its value<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"592\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-62-1024x592.png\" class=\"wp-image-5724\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-62-1024x592.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-62-300x173.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-62-768x444.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-62-1536x888.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-62-18x10.png 18w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-62.png 1910w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>You will no longer be able to access this key <strong>API<\/strong> once the page is closed. Make sure the <strong>store in a safe place<\/strong> in case you need to use it again.<\/p>\n<\/blockquote>\n\n\n\n<p>After copying the API token, return to the <strong>WPMasterToolKit settings page<\/strong>.<\/p>\n\n\n\n<p>Then paste the key you have just copied from <strong>MailerSend<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2780<\/mark><\/strong> in the field <strong>API Key<\/strong> <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2781<\/mark><\/strong> .<\/p>\n\n\n\n<p>If you have a <strong>Professional plan <strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#c0392b\" class=\"has-inline-color\">\u2782<\/mark><\/strong><\/strong> at <strong>MailerSend<\/strong>you can activate the corresponding option to benefit from advanced features such as <strong>personalized letterheads<\/strong> and better deliverability management.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"341\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-64-1024x341.png\" class=\"wp-image-5731\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-64-1024x341.png 1024w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-64-300x100.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-64-768x256.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-64-1536x512.png 1536w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-64-2048x682.png 2048w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-64-18x6.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">From Email<\/h2>\n\n\n\n<p>After copying the API token, return to the <strong>WPMasterToolKit<\/strong> settings page. Then paste the key you just copied from <strong>MailerSend<\/strong> into the&nbsp;<strong>API Key<\/strong>&nbsp;field.<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"914\" height=\"319\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-63.png\" class=\"wp-image-5727\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-63.png 914w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-63-300x105.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-63-768x268.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-63-18x6.png 18w\" sizes=\"(max-width: 914px) 100vw, 914px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Send a test e-mail<\/strong><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Note:<\/strong> Checking your domain <strong>MailerSend<\/strong> must be completed before a test e-mail can be sent.<\/p>\n<\/blockquote>\n\n\n\n<p>Once you have configured your settings, we recommend that you send a <strong>test e-mail<\/strong> to check that everything is running smoothly. To do this, go to <strong>WPMasterToolKit \" Tools<\/strong>then select the <strong>Email Test<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"832\" height=\"412\" src=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-65.png\" class=\"wp-image-5735\" srcset=\"https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-65.png 832w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-65-300x149.png 300w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-65-768x380.png 768w, https:\/\/wpmastertoolkit.com\/wp-content\/uploads\/2026\/01\/image-65-18x9.png 18w\" sizes=\"(max-width: 832px) 100vw, 832px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>Configure <strong>MailerSend<\/strong> as a server <strong>SMTP<\/strong> on WordPress with <strong>WPMasterToolKit<\/strong> allows you to ensure that your e-mails always arrive at their destination, reliably and securely. By following the steps in this tutorial - creating an account <strong>MailerSend<\/strong>verification of your domain, generation of the <strong>API key<\/strong> and configuration of <strong>WPMasterToolKit<\/strong> - you implement a professional solution to manage all your mailings, whether notifications, transactional or marketing e-mails.<\/p>\n\n\n\n<p>Using a service <strong>SMTP<\/strong> as <strong>MailerSend<\/strong> not only improves the deliverability of your e-mails, but also offers you advanced functionality and effective tracking for your communications. Once your settings have been configured and tested by sending a test e-mail, you can be sure that your messages are reaching your users without a hitch.<\/p>\n\n\n\n<p>With this configuration, your WordPress site gains in reliability and professionalism, offering your users a more consistent and secure experience.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction Reliable e-mail delivery is crucial for any WordPress site. Whether it's to confirm a registration, receive form notifications or manage password resets, your emails need to arrive at their destination. Unfortunately, the default WordPress configuration, which uses the PHP mail() function, is often unreliable and can lead to [...].<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5666","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/posts\/5666","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/comments?post=5666"}],"version-history":[{"count":61,"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/posts\/5666\/revisions"}],"predecessor-version":[{"id":6110,"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/posts\/5666\/revisions\/6110"}],"wp:attachment":[{"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/media?parent=5666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/categories?post=5666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpmastertoolkit.com\/en\/wp-json\/wp\/v2\/tags?post=5666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}