Fast, reliable, secure SMTP Service

MailerSend’s SMTP relay service empowers you to send transactional email quickly and at scale with optimum delivery results so there’s no need for you to manage your own SMTP server.


Enjoy better email deliverability

Reach the inbox with a third-party SMTP service that provides clean IP addresses and authenticated domain names. Sender reputation and blocklisting is managed and monitored by our deliverability experts.


Send transactional email with confidence

In transactional email sending, speed and delivery are everything. With MailerSend’s SMTP server, important updates and notifications will get where they need to in a timely manner, while increased inbox placement ensures a better customer experience.


User-friendly for the whole team

Send emails from any app, device or email client with just an SMTP server name, port, username and password—no need for complex coding. An intuitive interface allows you to manage domains and users with ease.


Stay informed with reports

Track email events in real-time on your dashboard and view separate analytics for multiple domains. View activity statuses such as bounces, clicks and unsubscribes and filter your email messages further by subject, recipient and tags.

Award-winning customer support

Whether you need help getting started with MailerSend’s SMTP service, want advice about advanced features or troubleshooting your account, our friendly customer service team is available 24/7 and just a click away.

93% satisfaction rate
100% response rate
24/7 support hours

Don’t just take our word for it.
Here’s what our customers think

Solved a major headache

"Very easy to set up—integrating with Joomla CMS was flawless, test emails were being sent within a few minutes. Generous free allocation also—no reason to use Google's standard workspace SMTP servers."

G2 user

Great SMTP relay service

"Integration with our business was easy using their SMTP service. Their support is the best. Usually they answer within 1 hour and the information provided is very detailed and helpful."

Pablo V.

Great product for a great price

"Very easy to use. I compared it with several other bulk email services and MailerSend offers the most value for the cost. Very happy to have found this product and I will be using it long-term."

Brennan S.

Frequently Asked Questions

What is SMTP relay service?

Simple Mail Transfer Protocol (SMTP) is a widely supported standard for exchanging information between servers (i.e. sending email). 

SMTP service providers enable businesses to utilize SMTP without the need to manage their own servers. It allows senders to deliver bulk or transactional email through a trusted third-party.

What options do you provide for developers?

We know that every developer is different, that’s why we offer 7 SDK libraries that are updated monthly, so you can choose your favorite language to work with. Developers can simply plug in our API or SMTP relay and MailerSend will do the rest, while low-coders can use our extensive library of integrations to connect their apps.

Check out our developers documentation.

How does MailerSend make my email sendings secure?

MailerSend’s SMTP server is built on a powerful and secure email infrastructure. Our mail servers protect your email sendings with SPF, DKIM and DMARC security protocols, so you can always be confident that your sending domain is safe from unauthorized sendings and your sender reputation remains intact.

Can I get a dedicated IP address?

MailerSend offers dedicated IPs for high-volume senders. If you’d like to learn more about whether a dedicated IP is right for your business, get in touch!

How do I set up SMTP?

Simply sign up to MailerSend for free and configure your account. Once you're approved and you have completed domain verification, you can test out MailerSend with 100 free emails. Then, choose a Free or Premium plan to get more emails, features and to start sending!

We have comprehensive documentation to help you get started, and our customer support team is available 24/7 to assist you.

How much does an SMTP service cost?

MailerSend offers a fair and transparent pricing policy, with no hidden costs and a pay-as-you-go model.  

You can get started with our free plan which includes 12,000 emails/month, with additional emails charged on a pay-as-you-go basis at a rate of $1.00/1,000. 

If you need more emails or advanced features, our cost-effective Premium plan is available for up to 2,500,000 emails/month, with additional emails charged at decremental rates starting at $0.90/1,000. Need more than 2,500,000 emails? Talk to us about a custom Enterprise plan.

What support will I receive if I encounter an issue?

MailerSend is renowned for its excellent support so you can rest assured that your transactional emailing is in good hands. If you need help getting set up, have questions about any of our features, or have any issues with your account, you’ll get a quick and friendly response from our 24/7 customer support team.

More features to explore

MailerSend is packed full of features that help you save time and grow your business.

Integrate emails in your stack now

Use our SMTP email service to start sending transactional emails within your apps. Get started with 12,000 free emails per month! Comes with 24/7 help from a friendly, dedicated support team.

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