SMTP for successful email ASAP

From multiple usable ports to real-time reporting via webhooks, we deliver.

Send your first email within minutes with SocketLabs' SMTP relay.

Enjoy 99.999% uptime

with SocketLabs

Setting up authentication

on sending domains is a snap

You could be sending in the next few minutes

with our SMTP relay service

Authentication, IP whitelisting and more is easy with the SocketLabs email platform.

Send without jumping through hoops

While one sender might be relatively new to email and has the time and capacity to set up their instance with proper authentication, some simply don’t.   To assist those senders, we’re able to offer IP allow-listing to create an environment in which you can hand over an IP to us, even without authentication, and have it put on our allow-list so you can send mail directly through your account without a care.

Harness more functionality

SocketLabs is not a bare-bones SMTP service. We have multiple ways to add value to your program, from reporting to traffic shaping, all backed by our 99.999% reliability.


Want to split transactional mail from marketing? Easy, plus our in-depth reporting can show you how each stream is performing. Want to process unsubscribes and complaints? Sure. SMTP doesn’t have to be a slog.

Keep email flowing with 99.999% uptime and robust reporting to monitor performance.
IT ADMIN Keep email flowing (2)

Get actual support from actual experts

Let’s face it: Support in email is really hard to come by nowadays. It’s not surprising, but it’s not really acceptable when you’re paying for an email service provider.   We take email seriously. The SocketLabs experts (who are actual email veterans) won’t leave you hanging for hours or days. We’ll help, pronto. Faster fixes mean faster results.

SMTPeep these reviews!

"SocketLabs is clearly driven by customer success and has become a trusted partner of SignUp.com"
"It was like a breath of fresh air having something that we could plug into in our environment, and make a few customizations, and be up and running in the blink of an eye."
"We should have transitioned a long time ago. With SocketLabs, we're not just a number. I've got the name of a person I can ring up if I've got a problem."
"We always want to be at the forefront of the marketing automation world, and SocketLabs helps us do that."
"We've been working together for at least 8 years, and we wouldn't trust anybody else with our email delivery."
Lindsay Willott
CEO, Customer Thermometer
"Ultimately, we realized that email is an incredibly specialized area requiring dedicated, expert resources. We saw vast improvement after switching to SocketLabs’ managed email service."

Resources to help you keep email flowing