Do you need to fix email delivery issues on your WordPress site? has been working to improve email deliverability for decades, establishing an extensive record as a reliable service.

This tutorial will show you how to improve email deliverability with the mailer in WP Mail SMTP.

Note: WP Mail SMTP and are two different products from different companies. is a mailer that you can connect with WP Mail SMTP. If you have a WP Mail SMTP license and you’d like to use the mailer, you will need to purchase an plan separately.

What Is has been a market leader in email delivery and the preferred choice for more than 100,000 businesses for over 22 years. It’s known for its ease of integration, quality support, and powerful API.

In order to complete the mailer setup in WP Mail SMTP, you’ll need:

    • A domain-specific email address (i.e., [email protected])
    • A credit card (required to complete account registration)
    • Access to your site’s DNS records
  • Cost: Free up to 50,000 emails within 30 days. After this, you will need a paid account. Check out’s pricing page for full plan options. Higher plans may include much higher sending limits.
  • From Email Requirements: You’ll need a domain-specific From Email (e.g., [email protected]) for reliable email delivery.
  • Bottom Line: is a recommended mailer because it’s a reliable industry leader in email delivery. Where many similar services require an extensive setup process, has remained rather straightforward.

Note: For more information about supported mailers, check out our complete guide to WP Mail SMTP Mailers.

Once you have these details on hand, you can jump into the tutorial below.

Setting Up Your Account

First up, you’ll need an account with This account will connect to your WordPress site so that your emails can deliver reliably. If you already have an account, go ahead and log in. Otherwise, create a new account now.

When creating a new account with, you’ll need to complete a few additional steps after registering. These steps help to prevent spammers from signing up for your mailing list, which is important to keeping’s service reliable.

First, be sure to check your email inbox and follow the activation link sent to you. This will also require you to agree to’s usage policy.

Next,’s team will review and approve your account, which may take up to 24 hours. This approval process will likely require you to provide additional details or clarification, so please keep an eye on your inbox for any updates.

Once your account is up and running, you’ll be ready to start the mailer setup process. Keep the browser tab or window with your account page open, as you’ll use it in the next step.

Setting Up Your Site’s DNS Settings

Authentication is an important step in successful email delivery. This helps to show email providers that your emails are being sent from a legitimate source. uses an SPF record to help authenticate your emails, so you’ll need to add this record to your site’s DNS settings. You’ll also need to set up a DKIM record before you can send emails with

Note: For more details on modifying your site’s DNS settings, see our tutorial on adding DNS records for WP Mail SMTP setup.

You can also check out’s knowledge base for details on the DNS records it provides. has a straightforward onboarding process that makes it easy to access the DNS records required to authenticate your domain. To get started, you’ll need to access their onboarding portal and log in with your account details.

Sending Domain

The first step is to specify your sending domain. This should be your site’s domain. To begin the verification process, you’ll need to enter your site’s domain in the What is your sending domain? field. Then click Next to continue.

What is your sending domain

Adding the SPF Record

After adding the sending domain, you’ll see the SPF record that you’ll need to add to your site’s DNS settings. Click on the copy icon to copy the SPF record.

Copy SPF record

Alternatively, you can find the SPF record from your account dashboard. In the top menu, click on Account » My Settings.

My settings tab

In the GENERAL tab, you should see the following SPF record:

v=spf1 ~all

General Settings and SPF record in SMTP com account

You’ll need to add this record to the DNS settings for your site.

In your site’s DNS settings, you may also see a TTL (Time To Live) field for the record. If you’re provided with a way to change this, we recommend setting the TTL to 1 day (or 86400 seconds, depending on the units your DNS uses).

After you’ve successfully added the SPF record, head back to the onboarding portal and click on Verify SPF.

Verify SPF record

Once the changes are propagated, you’ll be able to proceed and add the DKIM record for your site.

In some cases, DNS changes can take up to 48 hours to be recognized, so you may need to check back on this later.

Setting Up the DKIM Record for Your Domain

Before you can send emails from your domain, you’ll need to add a DKIM record in your domain’s DNS settings.

For, this record consists of a TXT record with the following configuration:

  • Name: smtpcomcustomers._domainkey
  • TXT Value: copy from the onboarding portal.
  • TTL: 3600 seconds or 1 hour, depending on the unit in your DNS settings.

You can find the details for this record in the DKIM Verification section of the onboarding portal.

DKIM verification recommends a TTL of 3600 seconds. Depending on your provider, using this value may not be possible. If so, you should use your provider’s default value.

After setting up your DKIM record, head back to the onboarding portal and click on Verify DKIM to confirm the status.

Verify DKIM record

Remember that it may take up to 48 hours for changes to your domain’s DNS settings to be reflected on your domain.

Once the records are propagated, you should see a Verified status below each record.

Verified SPF and DKIM records

Note: For more information on DKIM records on, check out their DKIM documentation.

Setting Up WP Mail SMTP

Now that your account is ready, you can switch over to setting up WP Mail SMTP. When you’re ready, go ahead and log in to your WordPress admin dashboard.

If you haven’t already, be sure to also install and activate the WP Mail SMTP plugin.

Once you’ve installed WP Mail SMTP, go to WP Mail SMTP » Settings, then select the General tab.

wp mail smtp settings

Next, scroll to the Primary Connection section.

Primary connection section

In the next sections, we’ll cover the details for each of the settings located on this page.

From Email

The From Email is the email address that all of your site’s emails will appear to be sent from. In order for services to be able to work properly, this email address must be at your domain (i.e., [email protected]).

Note: You can use any email address as the From Email address as long as it contains the domain you verified in your account. However, it must be connected to a working inbox if you plan to receive emails at this address.

We strongly recommend also checking the box labeled Force From Email. This option will save you the trouble of editing the From Email settings throughout your site, and help to ensure your mailer can process your site’s emails.

Changing the From Email in the WP Mail SMTP settings

Note: For more details, see our guide to understand how the Force From Email setting works.

From Name

The From Name will, by default, be set to your site’s name. However, you can change this to any text you’d like.

You can also select the Force From Name option to apply this setting to emails site-wide.

Changing the From Name in WP Mail SMTP


In the Mailer section, you’ll need to select the option.

Select SMTP Mailer


Next up, you’ll need to fill in the API Key and Sender Name from your account.

To quickly locate the API Key for your account, click on the Get API Key link in the section of the settings.

Get API key link

This link should take you to the API page in your account. Here, carefully copy the full value in the Key column.


Then return to your WP Mail SMTP settings and paste the value you copied into the API Key field.

Sender Name

Once you’ve added your API Key, move down to the Sender Name field. To quickly find the value needed for this field, click on the Get Sender Name link.

Get sender name link

This link should open the Senders page of your account. Here, you’ll need to copy the value under the Name column.

Copy the Sender Name from SMTP com account

After copying the Name value, switch back over to your WP Mail SMTP settings and paste it into the Sender Name field.


Backup Connection

Setting up a Backup Connection is optional and isn’t required to complete your mailer setup. However, to further improve email deliverability, we recommend configuring an additional connection to serve as a backup in case your Primary Connection fails.


Note: Want to send emails using different connections based on a set of rules or conditions? Be sure to check out our Smart Routing tutorial to learn more.

Once you’re done, click the Save Settings button to save the changes.


Sending a Test Email

Note: Before moving forward with this step, please check your Deliverability Settings to confirm that your site’s SPF Status is set to Pass.

Once your settings are all ready to go, you can send a test email to make sure your connection is working as expected. To do so, go to WP Mail SMTP » Tools and click on the Email Test tab.

Opening the Email Test tool in WP Mail SMTP

In the Send To field, you can enter any email address whose inbox you have access to. We recommend leaving the HTML setting ON unless you know you’ll only be sending plain text emails.

Note: If you’ve set up an additional connection, you’d be able to choose between your Primary Connection and other connections when sending a test email.

Once you’ve configured your settings, click the Send Email button to send your test email.

Click send email button

Once the email has been sent, you should see a success message.

WP Mail SMTP test email success message

Next, check the inbox for the email address you entered. You should soon receive the email for this test.

Successful test email from WP Mail SMTP

Last, you’ll need to confirm that this test email was properly sent through your account. To do so, check your Deliverability Settings page.

If the email was successfully sent through your account, you should see a Pass status for your domain.

Checking the status of an email test in

Note: If you do not see a Pass status, then please review the earlier steps in this tutorial to confirm that you filled out all of your and WP Mail SMTP settings correctly.

That’s it! You’ve just completed the setup for with WP Mail SMTP, and your site’s emails should be delivered reliably.

Next, would you like to keep a log of all the emails your site sends out? Be sure to check out the details in our email logging guide.