Best SMTP Services Compared

8 Best SMTP Services for Email Marketing (2022)

Are you looking for the best SMTP services for email marketing?

SMTP services help you to send emails to your users and customers from your website safely, without fail.

Emails are an important means of communication between your website and users. So, it’s essential to ensure that your emails are properly sent and delivered to your users’ inboxes. And, SMTP services help you achieve that goal.

In this article, we’ll take a look at the best SMTP services for email marketing.

MonsterInsights is the best WordPress Analytics plugin. Get it for free!

What is SMTP? Why Do You Need an SMTP Service?

SMTP stands for Simple Mail Transfer Protocol. It is the industry standard for sending electronic messages or emails. It uses proper authentication, which increases the chances of your emails being delivered properly.

SMTP Services for Email Deliverability

If you’ve got a website, then you may have set up automated user-triggered emails to notify users about their activity on your site. For example, when they register a new account, change a password, order a product, purchase a product, etc.

But a lot of times, your transactional emails like these may be failing to reach the users’ inbox. And, you may be losing revenue because of the failure to communicate.

The main reason behind this problem is that your mailing system is not configured correctly. For example, if you’re using WordPress, then the problem occurs because its default PHP mail() function is not configured correctly by most hosting services.

So, the solution to this problem is to use an SMTP service that configures email authentication properly for you.

With that said, let’s take a look at the best SMTP services for reliable email marketing.

SMTP Services Video Overview

The Best 8 SMTP Services

  2. Sendinblue
  3. Mailjet
  4. Mailgun
  5. SendGrid
  6. Amazon SES
  7. G Suite
  8. Postmark


best smtp services is the best SMTP service you can get your hands on. It has over 22 years of experience and is trusted by over 100,000 businesses including companies like Best Buy and T-Mobile.

Using, it’s easy to send and track a large volume of emails while ensuring fast delivery. The service ensures that your transactional emails reach the inbox of your subscribers without any delay. offers a Reputation Defender addon that monitors your email list health, protects emails from getting blacklisted by internet service providers (ISP), and making sure that emails reach your audience.

You can set up in no time, as it easily integrates with popular platforms including WordPress. It also provides secure sending through SSL encryption and blocks spam.

Besides that, the service offers 24/7 customer support and detailed analytics reports that show email delivery and engagement performance.

Pricing: prices start from $25 per month with 50,000 emails per month. But if you want more emails per month, then consider upgrading to a higher plan.

2. Sendinblue

sendinblue best smtp services

Sendinblue is the best SMTP service and also one of the most popular email marketing services in the world. It offers SMTP email service for both user-triggered transactional emails and bulk email campaigns. Also, it provides a powerful SMS marketing and live chat solution for your business.

Using Sendinblue, you can send transactional emails and highly targeted marketing emails to your users or subscribers. Backed by a team of email deliverability experts, it provides a reliable SMTP server for your business emails.

Sendinblue works well with WordPress and other marketing tools like OptinMonster, Google Analytics, and many more.

Pricing: Free plan with 300 emails per day. The starting paid plan Lite is available for $25 / month with 40,000 emails per month and no daily sending limits.

3. Mailjet

mailjest most popular smtp

Mailjet is another popular SMTP provider and is designed for fast-moving teams that want a complete email marketing solution. It offers an easy to use email builder through which you can create responsive and attractive emails with just a few clicks.

Mailjet offers a free SMTP server that lets you send tons of emails with its robust delivery infrastructure. Setting up an SMTP server is very easy with Mailjet. You can also integrate the SMTP service with any system.

And with a variety of ports on offer, you get greater flexibility as you can select a port that’s suitable for your client or ISP. You also get TLS or SSL encryption to secure your emails.

Pricing: Mailject offers a free SMTP service with 6,000 emails per month (200 emails per day). Its paid plans start from $8.69 per month billed annually and you get 30,000 emails per month.

4. Mailgun

mailgun smtp

Mailgun is a super powerful SMTP provider for developers. Its powerful email sending infrastructure lets you send millions of transactional and bulk emails with higher delivery rates.

You can use Mailgun with a WordPress website easily. The popular SMTP plugin WP Mail SMTP also offers native integration with Mailgun to connect it to your WordPress site smoothly.

Mailgun is a highly scalable SMTP service. However, it’s quite complicated for beginner-level users.

Pricing: Mailgun offers pay-as-you-go pricing plans providing you the first 10,000 emails and 100 validations free every month. For 20,000 emails per month, you need to pay $5 / month. If you want a dedicated IP address, then you need to sign up with a Production plan which costs $79 / month.

5. SendGrid

sendgrid smtp services

SendGrid is a popular email delivery service available on the market. It allows you to send and create email newsletters, promotions, shipping notifications, password resets, and all types of emails with confidence.

SendGrid is user-friendly that you can easily integrate with their email API and send emails that will reach the inbox. Also, it lets you authenticate your domains and offers a dedicated IP address to boost email deliverability.

It’s easy to integrate and use the SendGrid SMTP relay service with WordPress and other platforms. To connect your WordPress site with SendGrid, you can also use the WP Mail SMTP plugin free.

Pricing: Free plan with 40,000 emails for 30 days and 100 emails per day. After that, their paid plans start from $24.95 /month.

6. Amazon SES

amazon aws smtp

Amazon SES or Amazon Simple Email Service is a highly scalable cloud-based email sending service. It’s a product of the leading cloud computing service company Amazon Web Services.

The Amazon SES comes with a powerful SMTP interface capable of sending tons of emails smoothly. It includes features like content filtering, dedicated IP addresses, and a reputation dashboard to improve your sender reputation.

Hence you can confidently send transactional messages, marketing newsletters, and also receive incoming emails. Its robust structure ensures that your emails don’t end up in the spam folder.

Pricing: If you’re hosting your site on Amazon EC2, then you can send 62,000 emails/month for free. For other email clients and websites, you need to pay $0.10 every month for 1000 emails.

7. G Suite

gsuit smtp

G Suite is a package of productivity apps for business by Google. It includes professional email, online storage, calendar, and more for your business.

Using this SMTP provider, you can use Google’s SMTP servers to send emails to your customers. It’s easy to integrate the Gmail SMTP in WordPress with the WP Mail SMTP.

However, it’s suitable only for small businesses because it lets you send only 2000 emails per day.

Pricing: Starts from $6 per user per month.

8. Postmark


Postmark is among the best SMTP providers you can get your hands on. It offers quick email delivery and easy integration.

One of the features of Postmark is that it specializes in transactional emails. So, this means that you get top-notch security and detailed analytics.

It offers 3 servers in the US, 1 server in Singapore, and 1 server in Amsterdam.

Pricing: Postmark prices start from $10 per month for 10,000 emails.

Connecting SMTP Services to Your WordPress Site

Now that you know the best SMTP services on the market, you may be wondering how to connect an SMTP service with your WordPress site.

If so, then you’re in luck! The best WordPress SMTP plugin WP Mail SMTP makes it effortless to connect your WordPress site with the top SMTP relay services.

WP Mail SMTP Best WordPress SMTP Plugin

WP Mail SMTP is available as a free plugin with easy setup options for Mailgun, SendGrid, Gmail SMTP, and more. There’s also the premium plan with Microsoft SMTP, Amazon SES SMTP support.

Used by more than 1 million websites, WP Mail SMTP is the perfect SMTP solution for WordPress. To learn more, visit the official website and documentation.

We hope this article helped you to find the best SMTP services for email marketing. You may also want to see our guide on how to create a free business email address.

And don’t forget to follow us on Twitter, Facebook and YouTube for more helpful Google Analytics tips.

Want to Try MonsterInsights for Free?

Enter the URL of Your WordPress website to install MonsterInsights Lite.

Add a Comment

We're glad you have chosen to leave a comment. Please keep in mind that all comments are moderated according to our privacy policy, and all links are nofollow. Do NOT use keywords in the name field. Let's have a personal and meaningful conversation.

This form is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.