Prolateral Consulting Ltd
Prolateral Consulting Ltd
Outbound SMTP
Outbound SMTP Smarthost

Do you have trouble sending emails?

Solve your outbound email problems for good. Prolateral's outbound email service gives you a secure and trusted means of sending and relaying your emails regardless of where you are or which ISP you are using.

What is outMail?

outMail is :

  • a secure authenticated SMTP mail service
  • a secure and fast SMTP mail relay
  • a secure and reliable smarthost
  • an outbound SMTP server
  • fully managed by a online portal
  • available in flexible service plans

In addition; outMail virus scans all messages giving you peace of mind that your email is not only sent securely, but it is safe and clean.

outMail Features



Authenticated SMTP

outMail supports username and password SMTP authentication. Giving users access to a secure, safe and reliable outgoing SMTP service for sending legitimate emails.

SPF Support

Increase your deliverability with SPF (Sender Policy Framework). SPF records are designed to combat spam, adding our trusted outMail servers to your existing SPF will further validate your email.


Alternative SMTP ports

In addition to the Standard SMTP port 25, we support additional SMTP TCP ports to avoid your ISP blocking or redirecting the standard port. outMail also supports the sending of emails via an API gateway.

Great IP Reputation

Our IP reputation is the key to our success, and is designed to rotate addresses automatically to ensure your emails are delivered. We maintain good relationships with many large providers to keep our IP Addresses white-listed.


Management Portal

From the management portal you can see real-time usage graphs and raw SMTP log information.

24x7 Protection

Our customers support our acceptable use policy to help email deliverability. However should a customer device go rogue, we have 24x7 activity & network monitoring in place to quarantine that user so services can go on uninterrupted.


Great service and superb customer service as always. Many thanks

Adam H, Cumbria, UK

Who is outMail for?




outMail for Mobile Users

outMail works from any location worldwide making it the perfect option for sending emails on the go.

Some ISP’s block the sending of emails outside their network to prevent spamming. This can be annoying when you’re on a hot spot, hotel WiFi or using mobile data. With outMail you only need to setup your send connector once and it works everywhere.

outMail for Mobile

outMail for Home Users

outMail gives you the peace of mind that your personal emails are being sent using a trusted and secure mail server.

Some ISP’s have large networks and they do the best they can to protect their networks, but they still see a large number of IP Addresses blacklisted due to abuse. This is inevitable with large Internet Service Providers.

Prolateral’s core business is message delivery. We work extremely hard to keep our IP reputation to its best, thus giving your emails better deliverability.

You can even send emails using your own domain name and you can use the same outMail account on multiple devices.

outMail for Home

outMail for SME

Prolateral is in the business of empowering your business, with our core focus on messaging and email delivery.

outMail supports multiple domains and users on a single account. We’re fully SMTP compliant meaning you can use outMail on your company network, servers, clients applications, mobile devices and even the photocopier.

With a fully featured management portal you can be in complete control of your email smart host.

outMail for SME

outMail for Corporate

Do you know what your companies email server deliverability is? And what it’s server and IP reputations are?

We know ours, outMail is a fully scalable SMTP smart host and email relay.

Prolateral works hard to ensure the best reliability and deliverability of your emails. We work with other ISPs to better whitelist our services and use their feedback loops.

outMail is a Secure Authenticated SMTP service. We promote and support the use of SPF, DKIM and DMARC.

outMail for Corp

outMail for Bulk Email Sender

Running an email marketing campaign or a bulk newsletter email to a large number of recipients? Then we’ve got you covered.

outMail is a professional SMTP service where sender reputation really matters to us. We understand that email campaigns play a key role in your own marketing pipelines and business strategies.

Our service is structured to support a scalable mailing list, with constant monitoring and feedback from downstream ISPs we continue to deliver the best service possible.

outMail for Bulk


What is SMTP?

SMTP is short for Simple Mail Transfer Protocol, which is the method used for Internet email delivery. It is the most widely used protocol for sending outbound email from one server to another, known as a SMTP relay. The outbound SMTP server is generally known as a Mail Transfer Agent or MTA.

Do I need it?

If you need to send emails? Then the answer is yes.  All email is sent via a protocol called SMTP.  It's a protocol that knows how to take your email and deliver it to the recipients mail server.  With outMail we make the process simple, you can email from anywhere in the world and from your own domain name.

I'd like to know more


Enough already, I want it?

outMail comes in various packages to suit all users. From home users, mobile users, small to large companies and even bulk senders we've got all your SMTP needs covered. For partners and resellers we've got you covered aswell. Offering a white labelled service for you to brand and resell as your own.

 Start Now.. Resell SMTP