Prolateral Consulting Ltd
Prolateral Consulting Ltd
Sending an Email using hosted SMTP service called outMail
Sending an Email
Outbound SMTP
Outbound SMTP Smarthost

Outgoing SMTP Email Service

outMail is an outgoing SMTP email relay service that integrates with your existing e-commerce solutions, mailing list and email applications. outMail works with all SMTP (Authenticated SMTP) applications, computers, servers and mobile devices.

All emails are sent using a outgoing SMTP server (also known as a SMTP gateway or SMTP Smarthost). The protocol SMTP (Simple Message Transfer Protocol) has been around since the early days of the Internet and its the method all email messages use to send emails from the sender to the recipient/s. Sending emails is the life blood of any business and as such we've designed outMail as a trusted service with a high deliverability reputation.

Prolateral not only offers outMail as a trusted outgoing SMTP email server, but we help you with better security of emails by supporting SMTPS, SPF, DKIM signing and DMARC to further increase trust and sending reputation of emails.

With an instant setup, free trail using outMail10 or NFR (Not-For-Resale) license for partner/resellers, you can test and start sending emails in minutes.

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 and reliable outgoing SMTP email relay service, designed for seamless integration with diverse platforms and easy setup. With features like alternative SMTP ports, DKIM signing, OutMail ensures secure email transmission, making it an ideal choice for businesses seeking enhanced email deliverability and reputation.

outMail is :

  • a secure authenticated SMTP mail service
  • a secure and fast SMTP mail relay
  • a secure and reliable smarthost
  • an outgoing 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 & DKIM 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.

With DKIM signing your emails you can further protect your messages from spoofing and phishing.


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. In addition the outgoing SMTP server configuration details and howto guides are also available in the portal.

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. SMTP security is key to ensuring reliable email delivery.


Thank you, thank you, thank you.  Suddenly found myself unable to send emails whilst on holiday in South Africa.  Was told to look up @Prolateral and use their outbound SMTP service. 

Few minutes later I was back up and sending emails again.  The service worked so well whilst I was away I decided to upgrade from the FREE service to outMail 100.  Keep up the good work guys.

David Price, York, Yorkshire, 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 (outgoing SMTP server) 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 email 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.

Internet Service Providers (ISP) often restrict access to their SMTP servers from within their own network. This can be frustrating when your trying to send an email away from home.

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.

Make outMail your outgoing SMTP server. No need to change ISP just let outMail send (relay) your outbound SMTP emails.

outMail for Home

outMail for SME

Prolateral is in the business of empowering your business, with our core focus on messaging and reliable 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 SMTP smarthost.

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 SMTP 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 for SMTP Bulk Sending; 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.  In order to send email you need an email (SMTP) service provider, like us!  With outMail we make the process simple, you can email from anywhere in the world and from your own domain name.

Setting up outMail is as easy as updating your existing outgoing SMTP server settings to use outMail. We have published many SMTP server setup guides, including SMTP server troubleshooting and best practices for SMTP sending in our support section and HowTo sections.

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 as well. Offering a white labelled service for you to brand and resell as your own.

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