The Transactional SMTP Service That Delivers

Easily connect and send your transactional emails with SMTP relay for maximum deliverability, reliability, and scalability.

  • Transactional 

  • Confirmation 

  • Registration Emails

  • Shipping

  • Password 

  • Cart Abandonment

  • 200 Free Emails
  • Easy Setup
  • 5 Star Support

SendLayer works seamlessly with 1,000+ platforms:

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Finally, a Transactional SMTP Solution That’s Easy and Powerful

We are developers at our core and we built SendLayer in a way that would make our lives easier, with a super easy SMTP connection for sending email in our own projects.

Speak Your Language, We’ll Understand It

It doesn’t matter what application or programming language you use to build your site, your emails can work via SMTP

  • PHP
  • Python
  • Javascript
  • Ruby on Rails
  • … and more!
SendLayer works with all programming languages

Give Your Server Relief

Your website or app has a lot going on. Unload the burden of sending emails to an SMTP server that was designed and built to send millions of emails reliably.

Using SMTP Helps Server Load

Connect With Any Website Platform or Custom Application

Easily integrate with WordPress, WooCommerce, Magento, and more. If you can add SMTP details, you can send with SendLayer.

SendLayer integration examples

Get Started With the Most Powerful Transactional SMTP Platform

Send your emails with confidence using SendLayer.

Better Deliverability

Show up where it matters, in the inbox. Nobody will see you if you’re in spam.

100+ Integrations

Seamlessly connect with WordPress, WooCommerce, Magento, and more.

Fast Email Delivery

Appear in your user’s inbox quickly. Don’t make them wait for notifications.

  • 200 Free Emails
  • Easy Setup
  • 5 Star Support

Frequently Asked Questions

What is SMTP?

Simple Mail Transfer Protocol (SMTP) is a standard internet protocol for sending emails. SMTP allows different servers, and devices, to send and receive emails.

Can I have multiple SMTP users?

Yes, there is no limit to how many SMTP users you can add. Create one for yourself, your production server, and your backup server with no issues.

Can I have multiple SMTP connections?

Yes, you are not limited to the number of active SMTP users and the number of SMTP requests you make. Note: Excessive SMTP request frequency will be prevented by SMTP rate limiting.

Can I send marketing emails?

Yes. While SendLayer is more of a transactional email service, you can send marketing emails. Please be sure that you follow the appropriate regulations when sending these emails.

Do you offer a free dev environment?

Yes we have a free plan that lets you send hundreds of emails. You can use this to test your application. Get started for free now >

Get Started with the Most Powerful Email Delivery Platform

Send your emails with confidence with SendLayer.

  • 200 Free Emails
  • Easy Setup
  • 5 Star Support

I didn’t expect a response so quickly! Nor did I think it would be so detailed in the explanation. ! Highly recommend it!


Fantastic to get fast service when the need is urgent! My website emails appointment reminders, booking confirmations, and similar. It quickly becomes unmanageable without reliable service. Much appreciated!


David went up and beyond to help me figure out my problem. He’s very good at explaining things.


What to Look for in a Transactional SMTP Service

Choosing the correct SMTP (Simple Mail Transfer Protocol) service is critical for guaranteeing dependable delivery and optimal performance while sending transactional emails. A transactional SMTP service connects your application to the recipient’s email server, allowing you to send customized emails, notifications, bills, and other messages. Below, we will look at some of the most important criteria to consider when choosing a transactional SMTP service.

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The basic goal of any transactional email is to reach the inbox of the intended recipient. Look for an SMTP service with a proven track record of excellent delivery. Examine their anti-spam measures, domain and IP reputation monitoring, and support for authentication protocols such as SPF, DKIM, and DMARC. These capabilities aid in email deliverability and decrease the likelihood of your messages ending up in spam bins.

Scalability and dependability:

Consider the SMTP service’s scalability and dependability. Because your email volume may fluctuate over time, it’s critical to select a solution that can meet your current requirements while also accommodating future development. Look for providers with flexible price plans and the ability to handle huge email sending volumes without sacrificing performance. Furthermore, confirm that they have redundant infrastructure and failover procedures in place to ensure consistent email delivery even during server outages or maintenance.Email Management and Tracking:

Effective transactional email management and tracking are critical for monitoring performance, recognizing issues, and improving email campaigns. Look for an SMTP service that offers detailed email analytics, such as open rates, click-through rates, bounce rates, and unsubscribe rates. Tracking email delivery status, generating event-driven webhooks, and integrating with popular email marketing platforms can all help to improve your email management skills.

API and Integration Support:

An SMTP provider with a well-documented and easy-to-use API (Application Programming Interface) will greatly simplify your integration procedure. Check if the service provides powerful APIs that allow you to send emails programmatically, manage templates, and retrieve email statistics. Furthermore, determine whether the service connects seamlessly with your existing systems, such as content management platforms, customer relationship management tools, or e-commerce platforms, in order to streamline your workflow.

Customer Service and Reputation:

Reliable customer service is essential, especially when dealing with technical issues or inquiries about the service. Choose an SMTP supplier who provides responsive and educated help across several channels, such as email, live chat, or phone. It’s also important to assess their industry reputation. Read reviews, ask for referrals, and assess their track record in terms of service uptime, customer satisfaction, and overall reputation.

Conclusion: Choosing the correct transactional SMTP service can make or break the success of your email interactions. You can pick a provider that matches your individual needs by prioritizing variables such as deliverability, scalability, email management tools, API support, and customer service. To make an informed decision, take the time to study several providers, compare their features and cost, and consider trial periods or demos. Remember that a dependable and effective SMTP service may boost transactional email delivery, customer engagement, and business growth.

Do More With SendLayer

Having SMTP access is incredibly helpful, but we don’t stop there.

Detailed Email Logs

Track the full email journey to verify that your emails are making it to their destination.

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Open and Click Analytics

Check engagement on individual emails and filter them by status or recipient.

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Mailing Lists

Create emailing lists email groups and manage them in your dashboard.

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API Email Relay

Easily connect your website or app via API to power your email efforts.

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SMTP Email Relay

An SMTP setup so easy that you only need to copy and paste credentials.

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Email Analytics

Track the metrics that matter to you so you can optimize for performance.

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