Enterprise Email Delivery API

An Enterprise Email API Service with the highest levels of deliverability.

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Guranteed Transactional Email Deliverability

Best in class email delivery API custom built for transactional email deliverability. Our solution enables unlimited delivery of transactional emails for SaaS software.


Dedicated IP

We use dedicated trusted IP addresses to ensure deliverability.


Delivery Checks

Ensure emails are delivered every time they are sent with advanced tracking.


Enterprise Security

Enterprise level security and encryption on the API.

Never Get a Missed Email

Ensure that your customers never miss an important transactional email. Say never again to missed renewals, actions, and requests.


Low Latency Delivery

Deliverability in less than 1000ms from API request to SMTP handshake.

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Instant Confirmation.

Instant delivery confirmation provided directly on the API response.

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A powerful transactional email deliverability API built for the Enterprise.

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Advanced Analytics

Track open rates, bounce backs, soft fails, spam filters, and more.

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Our Pricing Plans

Our plans are designed to meet the requirements of enterprise level applications.


Unlimited Emails

100KB Max Payload

/ month

Transactional +

Unlimited Emails

Unlimited Payload


* Our plans are not suitable for newsletters.

Frequently Asked Questions

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Mailtug is a SaaS email deliverability API focused on transactional enterprise level emails. Mailtug is perfect for transactional emails that users must open.

Our unlimited plan starts at $995 and custom plans can be tailored to specific enterprise needs.

The API is an easy to integrate REST service. It is as easy as POST the data to the endpoint with the required fields, and the email is sent.

Our API and email deliverability services come with a 99.99% Service Level Agreement (SLA).