Are you looking for the best SMTP transactional email services?
SMTP (Simple Mail Transfer Protocol) ensures that your transactional emails are delivered to your users’ inboxes (and not their spam folders). It also allows you to automate emails based on your users’ actions and behavior.
The hard part is finding the right SMTP service as there are so many email services on the market.
We’ve done the research for you, and in this guide, we’ll share the best SMTP email services for marketing and automation.
1. sendLayer
SendLayer is the most reliable SMTP transactional email service. It ensures that your emails appear in the user’s inbox as quickly as possible .
What we like most about it is that you can easily connect and send emails from your website using the SendLayer API. There are no complex processes involved.
This makes it easy for anyone to start sending emails and notifications that include:
- Transactional email
- Registration emails
- Confirmation emails
- Shipping notifications
- Password Reset
- Cart abandonment
Whatever your SMTP needs, SendLayer has you covered. It works seamlessly with over 1,000 platforms. Some of the most popular include WordPress , WooCommerce , BigCommerce , Joomla, Drupal, and HelpScout.
With SendLayer, you don’t have to worry about the programming language (like PHP or Python) used to build your website or app. Your emails will just work!
And it doesn’t end there. When you sign up for SendLayer, you get access to advanced features like mailing lists and groups for easier management. Plus, you get a detailed email log so you can track the entire email journey and make sure your emails are reaching their destination.
On top of all this, there are built-in analytics that can be filtered by email, status, recipient, and more, so you can optimize performance accordingly.
While we’ve covered the basics, SendLayer has a lot more to offer. Learn more about SendLayer’s transactional SMTP service »
Price: Start using SendLayer’s free trial. Premium plans start at just $5 per month. Plus, it comes with a 100% risk-free 14-day money-back guarantee.
2. SMTP
SMTP is the most advanced email delivery service on the market. It allows you to send and track large volumes of emails. In addition, it has a highly responsive infrastructure that ensures fast and delay-free deliveries.
SMTP allows you to send all types of transactional emails as well as marketing emails. This includes automated emails such as order confirmations, shipping notifications, order status updates, user authentication, and password resets.
With this service, your email process will be smooth and seamless to improve the user experience on your website. Additionally, all plans come with a reputation defender (add-on). This feature monitors the health of your email list and protects you from soft and hard bounces.
The setup and onboarding process is quick and straightforward, so you can start sending emails right away. Plus, it gives you access to comprehensive reporting on your email delivery and engagement performance.
SMTP is suitable for all types and sizes of businesses and allows you to scale your email volume as your business grows. It is, without a doubt, the best SMTP relay and email delivery service in the world.
Price: The basic plan costs $25 per month. You can try the service free for 30 days with a limit of 50,000 emails.
3. Brief
Brevo (formerly SendinBlue) is a popular email belize phone number library marketing platform. You can send transactional emails to your subscriber lists and track the emails to find out the open rate, bounce rate, click-through rate, etc. Brevo also offers SMS marketing service to send promotional and transactional messages.
One thing that stands out about Brevo is that they manage SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) signatures through their domain names. This is a technical standard that helps protect email senders and recipients from spam, spoofing, and phishing.
Other notable features include drag and drop email builder, welcome emails, confirmation emails, A/B testing for emails, and advanced reporting for an optimized email marketing campaign .
Price: 300 emails/day with unlimited contacts are free. The starting cost for the basic plan is $25 per month.
4. mail gun
Mailgun is a powerful email service provider for professional developers . It offers high email deliverability, and with its advanced APIs, you can send, receive, and track transactional emails with ease.
Mailgun even has advanced email validation update driver from the context menu to increase your conversions.
It features a robust sending infrastructure with SMTP integration and a simple RESTful API to send bulk emails to your users.
When you sign up for Mailgun, you get access to responsive transactional email templates that are ready to edit and use. You can use the drag-and-drop editor to quickly create stunning emails without using HTML and CSS. Mailgun also comes with easy-to-use email marketing tools like segmentation, personalization, and A/B testing.
Price: It’s free for 30 days with a 5,000 message limit. After the trial, you’ll be downgraded to the Foundation 50K plan by default, which costs $35 per month. You can also choose your own plan or opt for a pay-as-you-go service.
5. SendGrid
SendGrid is a cloud-based SMTP transactional email provider that comes with a reliable platform for sending and receiving bulk emails with high delivery rates.
In addition to sending transactional emails, they also allow you to create email marketing campaigns. You can create an exceptional email program using their Email API option to send emails at scale.
It comes with a variety of integration options to get you started sending emails. You can get a full analytics report and metrics and real-time feedback on every email you send.
If you want to use a dedicated IP address for sending emails, SendGrid offers this on the Pro Email API plan or the Advanced Marketing Campaigns plan.
Pricing: In the first month, you can send 40,000 emails for free. After that, it offers a free plan of 100 emails/day forever. The Essential plan starts at $19.95 per month for up to 50,000 emails per month. The price increases as the number of emails you need to send increases.
6. Amazon SES
Amazon SES is a flexible and scalable SMTP transactional email service primarily targeted at application developers and digital marketers. helps you easily send notifications and transactional emails to your users. It allows you to use the SMTP interface or an Amazon SES API to integrate Amazon SES directly into your application.
It comes with a robust system and functionality that ensures your emails bypass spam filters. You can track email delivery, bounce rate, and rejections through its intelligent engine.
Price: It is a pay-as-you-go service, which means you will need to pay for what you use. It allows you to send 62,000 emails per month for free. After the free limit, you will need to pay $0.10 for every 1,000 emails. If your emails include attachments, you will have to pay $0.12 per GB.
7. postmark
ActiveCampaign’s Postmark is one of the best SMTP transactional email services that offers lightning-fast delivery for your applications and transactional emails. Postmark has SMTP servers distributed all over the world to ensure fast email delivery.
It has an excellent tracking system that allows you to monitor how many emails are opened and how much time is spent on the email you send.
Price: The basic plan costs $15 per month for 10,000 emails. You will need to pay $1.80 per 1,000 emails for additional emails.