SMTP Relay: Reliable and Scalable Email Delivery

SendGrid is the leader in transactional email delivery. Our cloud-based email solution with SMTP relay replaces your email infrastructure so you don't have to build, scale, and maintain these systems in-house.

Industry-Leading Deliverability

A suite of clean IP streams, a host of delivery and reputation features, and a team of deliverability experts focused on your sending.

Scalable Infrastructure

A global, custom-built MTA architected for the cloud and supported by a redundant, self-hosted datacenter infrastructure.

Real-time, Customizable Analytics

Create reports based on timeframe, email category, ISP, geography, and device-type.

Global Support

24/7 dedicated email experts ready to answer any and all questions.

Quick and easy 2 step sign-up process. Implement SMTP Relay in less than 5 minutes.

The SendGrid Difference

Proven Deliverability

We offer domain authentication, compliance and deliverability coaching, and proactive ISP outreach to ensure you achieve optimal inbox delivery.

Scale With Confidence

Whether you’re a startup or a large enterprise, we can handle your important emails. Our world-class platform delivers more than 70 billion emails per month.

Email Expertise

With SendGrid, you have an expert in your corner. Our Customer Success and Support Teams give you the information and guidance you need, when you need it.

Over 80,000 paying customers trust SendGrid to send more than 70 billion emails every month.