Title: MailerSend – Official SMTP Integration Author: MailerSend Published: October 20, 2021 Last modified: June 26, 2026 --- Search plugins ![](https://ps.w.org/mailersend-official-smtp-integration/assets/banner-772x250. png?rev=3444657) ![](https://ps.w.org/mailersend-official-smtp-integration/assets/icon.svg?rev=3444657) # MailerSend – Official SMTP Integration By [MailerSend](https://profiles.wordpress.org/mailersend/) [Download](https://downloads.wordpress.org/plugin/mailersend-official-smtp-integration.1.0.8.zip) * [Details](https://wordpress.org/plugins/mailersend-official-smtp-integration/#description) * [Reviews](https://wordpress.org/plugins/mailersend-official-smtp-integration/#reviews) * [Installation](https://wordpress.org/plugins/mailersend-official-smtp-integration/#installation) * [Development](https://wordpress.org/plugins/mailersend-official-smtp-integration/#developers) [Support](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/) ## Description WordPress hosting companies are not optimized for high-volume email sending, which may result in some of your emails not getting delivered. MailerSend’s [dedicated SMTP server](https://www.mailersend.com/features/smtp-relay) will ensure that your forms, account notifications, e-commerce orders, and other transactional emails get delivered. By using this official SMTP plugin, you will: * Improve your email deliverability * Protect your domain reputation * Learn more about your recipients #### Deliverability Improve inbox performance and ensure a smooth customer experience by letting MailerSend take care of email sending. After a decade of email delivery experience, MailerSend’s deliverability experts understand what it takes to avoid spam filters, stay off blocklists and lower bounce rates. #### Domain reputation Keep your domain reputation safe with MailerSend’s email authentication practices. Give your customers the confidence that they’re interacting with an established brand, and let MailerSend manage the emails that could potentially damage your reputation. #### Analytics Understand what happens after an email gets sent. Access a wide range of key metrics— like open rates, bounce rates and click-through rates—to learn what works and what needs optimization so you can keep improving your email performance. #### Features * Avoid spam filters, prevent blocklisting, and lower hard bounce rates with powerful sending infrastructure * Automate the customer experience by connecting to thousands of other apps with Zapier * Get instant push updates with webhooks * Receive customer replies sent to your domain with an inbound route feature * Monitor all email interactions such as opens, clicks, open locations and devices. Plus, use your own subdomain and get a custom tracking link! #### How it works 1. Install and activate the MailerSend plugin. 2. Add your [SMTP credentials](https://app.mailersend.com/domains) from MailerSend to establish the connection. 3. Test your connection to make sure it’s working. 4. And get sending! #### Support Get help whenever you need it. [Contact us](https://www.mailersend.com/contact-us) or drop a message via live chat in the app. MailerSend’s dedicated support team works 24/7 because transactional emails never stop. ## Installation #### Minimum requirements Requires at least PHP 7.4 and WordPress 5.8. #### Installation Install the official MailerSend SMTP plugin using any of the following methods. **Using the WordPress Dashboard** 1. Go to the Plugins dashboard and click **Add New**. 2. Search for **MailerSend SMTP**. 3. Click **Install Now**. 4. Go to **Installed Plugins** and activate the plugin. **Uploading in WordPress Dashboard** 1. Go to the Plugins dashboard and click **Add New**. 2. Click on the **Upload Plugin** button. 3. Select the plugin zip file from your computer. 4. Click **Install Now**. 5. Go to **Installed Plugins** and activate the plugin. **Using FTP** 1. Download the plugin. 2. Extract the file to your computer. 3. Upload the contents to your `/wp-content/plugins/` directory. 4. Go to **Installed Plugins** and activate the plugin. ## FAQ ### Why use MailerSend rather than WordPress to send emails? * Most WordPress hosting services use the PHP mail() function to send emails. But different email configurations between web hosts mean that they may not be optimized for deliverability. * MailerSend takes care of email delivery so your emails reach your customers safely. Plus, you get a dashboard that shows you important data about your emails and how their performance can be improved. * For more information, read this blog article about why WordPress and WooCommerce [might not send your emails](https://www.mailersend.com/blog/woocommerce-not-sending-emails) every time. ### What do I need to get started? To send emails, you only need to sign up for a MailerSend account and add a verified domain. For a step-by-step guide, check out our help article on [getting started with MailerSend](https://www.mailersend.com/help/getting-started). ### How do I set up automatic transactional emails? Create a MailerSend account, enable SMTP for your verified domain, and add it to your plugin. You can now focus on growing your brand and let MailerSend take care of delivering your emails. ### Is this plugin free? Yes! You can send up to 3,000 emails/month with MailerSend for free as well. For a higher volume of emails, you can pick from pay-as-you-go plans without long-term commitments. Premium plans start from $30/month for 50,000 emails/month. Compare the different plans [here](https://www.mailersend.com/pricing). ### Can you add a new feature to this plugin? We’re open to suggestions and feedback to improve the plugin. You might see your request in a future version! Talk to us [here](https://www.mailersend.com/contact-us). ## Reviews ![](https://secure.gravatar.com/avatar/92b7d005d1ba6b94b4e69814a40933f600fdcdcb097f2e1b5e4ae23d53535ee0? s=60&d=retro&r=g) ### 󠀁[Doesn’t work](https://wordpress.org/support/topic/doesnt-work-3275/)󠁿 [primerpizza](https://profiles.wordpress.org/primerpizza/) February 12, 2026 All set up but nothing arrives except the test email. ![](https://secure.gravatar.com/avatar/fa4dd3bc6de71fc372bf0691e133b4e6dc33870f4c4636608b6c096c144e4530? s=60&d=retro&r=g) ### 󠀁[3 templates for plan free](https://wordpress.org/support/topic/3-templates-for-plan-free/)󠁿 [faelmarcondeli](https://profiles.wordpress.org/faelmarcondeli/) July 8, 2025 1 reply 3 templates for plan free is a Joke.. ![](https://secure.gravatar.com/avatar/1fa2bf21597da18d36ff96dcd13d2e0df909606f2417a979d4b38e2f34155e07? s=60&d=retro&r=g) ### 󠀁[Plugin Ok, company not](https://wordpress.org/support/topic/plugin-ok-company-not/)󠁿 [Nico_S](https://profiles.wordpress.org/nico_s/) November 5, 2024 As far as I could see, the plugin seems to work Ok, it’s a shame I can’t say the same for the ‘practices’ of the company. ![](https://secure.gravatar.com/avatar/c8f025bbe514199c07892c6396914e6b8bacdeea8ec3da447184819a7e08cbdf? s=60&d=retro&r=g) ### 󠀁[Great Plugin Needs Some Polish](https://wordpress.org/support/topic/great-plugin-needs-some-polish/)󠁿 [savagemic](https://profiles.wordpress.org/savagemic/) April 12, 2023 1 reply The mailersend application is fantastic. I can’t speak highly enough about deliverability and functionality. However, if you are using this as a transactional email system for WooCommerce you cannot use the mailersend templates (which are particularly good) and have Mailersend send other WordPress-related emails, such as comment notifications and other emails such as Gravity Form entries. You cannot run this plugin and the MailerSend WooCommerce plugin together as it will create a critical WordPress error on transactional email sends. This seems like an oversight and I’m not really sure why these two plugins cannot be one and handle not only transactional WooCommerce but also WordPress emails. ![](https://secure.gravatar.com/avatar/7202e7a39eede8b8642480a66d822d20d1c7697a688b7a43c63f58a1c7307380? s=60&d=retro&r=g) ### 󠀁[Easy to use. Works like a charm!](https://wordpress.org/support/topic/easy-to-use-works-like-a-charm-8/)󠁿 [xyrik](https://profiles.wordpress.org/xyrik/) March 19, 2023 1 reply I don’t understand why reviewers gave this plugin a negative review “for not working” because it works perfectly. They must have forgotten to verify their account with MailerSend. The domain verification and account approval took less than a day to complete and I could send out emails in a blink of an eye. I switched to MailerSend because my Namecheap SMTP took twice the amount of time to post my contact form. With MailerSend, form submission takes 3-4 seconds. Kudos and thumbs up to the developers! I highly recommend MailerSend! ![](https://secure.gravatar.com/avatar/8bbbdf1d362eea5cc5b37ea501ca60ed155d2805608dbee5f1065eccbc0962b4? s=60&d=retro&r=g) ### 󠀁[Crappy plugin. Can’t even begin to use it properly.](https://wordpress.org/support/topic/crappy-plugin-cant-even-begin-to-use-it-properly/)󠁿 [vikx01](https://profiles.wordpress.org/vikx01/) January 12, 2023 1 reply I have a mailersend account. I checked my creds many times and set them correctly in the plugin. But every time I test I get “wp_mail_failed – SMTP Error: Could not authenticate.” [ Read all 12 reviews ](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/) ## Contributors & Developers “MailerSend – Official SMTP Integration” is open source software. The following people have contributed to this plugin. Contributors * [ MailerSend ](https://profiles.wordpress.org/mailersend/) [Translate “MailerSend – Official SMTP Integration” into your language.](https://translate.wordpress.org/projects/wp-plugins/mailersend-official-smtp-integration) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/mailersend-official-smtp-integration/), check out the [SVN repository](https://plugins.svn.wordpress.org/mailersend-official-smtp-integration/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/mailersend-official-smtp-integration/) by [RSS](https://plugins.trac.wordpress.org/log/mailersend-official-smtp-integration/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.8 * Security fixes #### 1.0.7 * Security fixes #### 1.0.6 * Tested up to the latest WordPress version #### 1.0.5 * Automated deployments #### 1.0.4 * Tested up to the latest WordPress version #### 1.0.3 * Update conflict list * Tested up to the latest WordPress version #### 1.0.2 * Add Tags field * Tested up to the latest WordPress version #### 1.0.1 * Tested up to the latest WordPress version #### 1.0.0 * Initial Release ## Meta * Version **1.0.8** * Last updated **2 months ago** * Active installations **2,000+** * WordPress version ** 5.7 or higher ** * Tested up to **6.9.7** * PHP version ** 7.2.5 or higher ** * Tags * [email](https://wordpress.org/plugins/tags/email/)[mailersend](https://wordpress.org/plugins/tags/mailersend/) [phpmailer](https://wordpress.org/plugins/tags/phpmailer/)[smtp](https://wordpress.org/plugins/tags/smtp/) [wp_mail](https://wordpress.org/plugins/tags/wp_mail/) * [Advanced View](https://wordpress.org/plugins/mailersend-official-smtp-integration/advanced/) ## Ratings 2.8 out of 5 stars. * [ 4 5-star reviews ](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/?filter=5) * [ 1 4-star review ](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/?filter=4) * [ 1 3-star review ](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/?filter=3) * [ 1 2-star review ](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/?filter=2) * [ 5 1-star reviews ](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/reviews/) ## Contributors * [ MailerSend ](https://profiles.wordpress.org/mailersend/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/mailersend-official-smtp-integration/) ## Donate Would you like to support the advancement of this plugin? [ Donate to this plugin ](http://www.mailersend.com/)