AuthSMTP is the outgoing SMTP email service for your e-commerce website, mailing list or email application on most current computers and mobile devices. With instant setup, a money back guarantee and very low cost starter accounts you can test and start sending email in minutes with no risk.

Availability

We understand that you expect to be able to send email at anytime of the day or night, availability and reliability is one of the key features needed in our always-on digital world.

At AuthSMTP we have worked very hard to build a network that is extremely reliable and capable of processing a very high volume of mail.

Read More

High Availability & Redundancy

Our systems are designed to be both high performance and reliable. Monitored 24 x 7 and self-repairing to provide high levels of availability.

Network Connectivity

Our network is spread across multiple interconnected, geographically diverse data centres each with high speed connections and many routes onto our network to minimize the impact of outages with our upstream providers.

Planet Friendly Hardware

We care about our planet - power usage and efficiency plays a big part in the way we select network equipment and we have gone to great lengths to source hardware that is reliable and powerful but at the same time has the best power efficiency features.

Deliverability

Email delivery can seem like an ever-changing puzzle, there are many aspects to be taken into consideration and getting one of these wrong can result in your email being rejected or filtered out.

Using AuthSMTP to send your email can significantly increase the deliverability of your emails, we do this by taking care of the difficult part for you....

Read More

Reputation

Reputation is the key aspect of email delivery, we have built our reputation over 10 years helping tens of thousands of customers getting their email delivered. To preserve our reputation:

  • We operate a strict anti-spam policy
  • We monitor our mail traffic to detect abuse
  • We monitor the reputation of our network including direct feedback loops with the major email providers
  • We virus scan messages sent using our service

Expert Advice

Our experience has provided us with a fantastic overview of what causes deliverability issues, how to detect them and resolve them quickly.

Flexibility

Everyone has different requirements when it comes to sending email, we recognise that one package does not fit all so we allow a great deal of flexibility with our service.

We have a full range of accounts from the base service that provides up to 1000 messages per month for a very low cost per year up to packages for very high volume senders.

Read More

Here are some examples of our customers usage patterns:

  • Sole trader, micro business or personal use sending 20-30 emails per day from a mobile device or computer
  • E-commerce website processing 500+ transactions throughout the day
  • Medium sized business with 250 employees operating UNIX / MS Exchange server relaying 10,000+ emails during the working day
  • Large web service operator with constant transactional messages and bursts of marketing emails sending 100,000+ per day

If you are unsure what your usage is, have bursty usage or just want the flexibility to increase your usage as your business grows you can sign up for a base account and then boost your account each month depending on your requirements.

No unexpected bills, no automatic payments - you are in control.

Security

Security is critical - the number of threats on the Internet from hackers, spammers and criminals grows each day so we take security very seriously.

To help you keep your communication secure and our network secure we provide numerous security features and we are constantly monitoring for emerging threats that may affect the service.

Read More

We offer the following security features:

  • SSL secure SMTP authentication
  • SSL encryption to our network
  • Strict sender address / domain validation policy
  • SPF / DKIM support to help prevent email spoofing

We operate industry standard network monitoring and scanning software to detect, track and block any threats against our network.

We also have full PCI compliance and regular network scans by Trustwave so you have peace of mind when signing up and using the service.

Support

We are proud of our reputation in offering a highly responsive customer support service and we are always looking at ways it can be improved. On our website we have setup guides for many of the popular email programs, troubleshooting guides, common error resolution articles and extensive FAQs.

In our online control panel you can view the status of your account and check for any errors that are being logged. If you are unable to resolve the problem using those resources you can contact our support team for a prompt and helpful response.

Instant Setup

All accounts are instantly generated when you sign up and your new SMTP server details are emailed straight to your signup address so you will be able to start sending email within a matter of minutes.

Get Started

FULL FEATURE LIST

Authenticated SMTP Server

In the simplest terms AuthSMTP is an outgoing SMTP email server, it can be used to send email from any program, application or device that can connect to an SMTP server and authenticate with a username and password.

There are some key differences from the SMTP server that your ISP may provide:

  • You can send from all of your email addresses without changing any settings, if you can receive email to the address you can send from it using our service
  • AuthSMTP is authenticated on a username and password so you can use it from almost all Internet connections including your home or office cable / broadband, mobile connection or public Wifi
  • We actively monitor and maintain the reputation of our service to help prevent your email being blacklisted, rejected or filtered
  • AuthSMTP is custom designed for sending email so the performance and availability may be significantly greater than the generic SMTP servers provided by Internet Service Providers.

Money Back Guarantee

We want you to be 100% confident when signing up so we offer a full money back guarantee - this gives you the peace of mind that you can test it 'live' with your own email application / Internet connection - without risk.

AuthSMTP accounts are created immediately and almost all are setup / sending mail within a very short time and without issue. If you do have any problems getting the service to work we have lots of support resources to assist you.

The money back guarantee is subject to the following terms:

  • Once 14 days have passed or you have successfully sent 100 messages or have upgraded your account (whichever is sooner) no refund will be allowable
  • This guarantee only covers newly created accounts (not renewal or upgrade payments) paid for using a credit / debit card or Paypal payment methods
  • If your account is terminated or suspended due to a breach of our terms and conditions / acceptable usage policy no refund will be allowable

Instant Setup

All AuthSMTP accounts are setup instantly when you sign up - once you have completed the sign up process an automated email will be sent to your sign up email address with your SMTP account details and you can start sending emails as soon as you have configured your email program, application or device.

Multiple 'From' Addresses & Domains

You can use AuthSMTP to send from all of your email addresses, as long as you can receive email to an address you can send from it using our service.

As a security feature all from addresses or domain names have to be validated on your account before you start sending, to validate an email address we simply send an email to the address in question with a validation web link, once you have clicked the link the address is automatically added to you account.

If you or your organisation have your own domain name you can validate it as a wildcard which means you can send from any address '@' that domain name, we offer alternative methods of authorising whole domain names using DNS or HTML files.

Authorising an email address or domain name on an AuthSMTP account only allows your account to send from that address, it does allow others to send from your domain name.

Optional SSL / TLS Support

You can choose to send your emails to our network using SSL, this basically means that an encrypted connection is created between your computer or program and our network.

SSL is not enabled by default but can easily be enabled at anytime through our control panel - for more information about SSL please see - Do you support SSL encrypted connections?

Virus Scanning

All email sent though AuthSMTP are scanned using a well regarded and widely used anti-virus engine that is regularly updated.

For the benefit of all users this feature cannot be disabled - any messages that are found to contain malicious content will be rejected and a notification will be sent back to you to explain why the message was rejected.

This protects your account and helps prevent you from inadvertently sending a virus to your family, friends, colleagues or clients - it is not a replacement for having up-to date anti-virus software on your computer and we encourage everyone to ensure they have sufficient protection from viruses and malicious software.

Email Duplication / Backup

We offer an email duplication feature with all accounts, this allows you to configure an email address of your choice that will receive silent copies of all emails sent through your AuthSMTP account.

For more information on this feature please see - Can I take a copy (duplicate) of emails sent?

Multiple Concurrent Connections

Most email programs can only send 1 message at a time but some programs or applications have support for concurrent connections, this allows them to open multiple connections to our service and send more messages at the same time, this is particularly useful if you are sending a high number of messages or messages that need to be delivered to all the recipients within a specific timescale.

We allow up to a maximum of 5 simultaneous connections - if your software supports this you will also need an Internet connection with sufficient bandwidth to support the connections, we recommend that you increment the number in stages to find the best level for your software and connection.

Control Panel

We have an online control panel where you can manage most aspects of your account including the following:

  • Account renewal or upgrades
  • Password management
  • Message history logs and quota usage
  • Advanced configuration for SSL, email duplication, maximum message size and API access
  • Manage sender addresses and domains
  • Raise technical support requests

Shared or dedicated IP Address

By default all accounts at level AuthSMTP 25 or over are allocated their own dedicated IP address which all your email will be routed out through, accounts less than AuthSMTP 25 will use IP addresses that are shared with other users.

A dedicated IP address can help with deliverability if you are sending a large volume of email and can provide a benefit if you want to tightly control the source of your emails.

A shared IP address is a lower cost option for low volume senders while still using IP addresses that have an established positive reputation with other email providers. It is important to note that we actively monitor the reputation of our network and any user that is having a negative impact on that will be removed from the service.

Flexible Instant Quota Upgrades

You can login to the control panel at anytime and instantly upgrade your account.

This can be until your account expiry date or you can choose to boost your account just for the current quota month, this gives you great flexibility if your quota requirements are likely to vary month to month.

Choice of alternative SMTP Ports

Many ISPs block the default SMTP port 25 on consumer and business Internet connections which would prevent you from sending to an external SMTP server, this is typically an anti-spam measure and is very common.

To resolve this issue we provide a number of alternative SMTP ports which you can connect to:

  • 23
  • 25 (not recommended)
  • 26
  • 325 (non-SSL only)
  • 2525
  • 465 (SSL only)

50MB Maximum Email Size

We provide a function in the control panel that allows you to alter the maximum message size that can be sent through your account, this has two uses:

  • If you have a number of users sending email on your account you can limit the maximum message size to a low level to prevent one user sending lots of large messages and using up your quota
  • If you need to send emails with large attachments you can increase the message size limit up to the maximum of 50 Megabytes

This can be changed at anytime via the control panel.

Works with almost all email programs

The vast majority of email programs will work with AuthSMTP, if it has an option to enter an SMTP server with a username and password it will generally work.

We have a large number of visual setup guides for all the popular email programs - please see SMTP Software Setup Guides. We also have a list of programs and corresponding versions that have been tested and are confirmed as programs that are compatible with AuthSMTP.

The service isn't limited to just email programs, it can also be used with:

  • Web scripts or applications written in languages such as PHP, Perl, Java or ASP.NET
  • Server based programs written in languages such as Python, Ruby, C, C++ or shell scripts
  • iOS or Android based apps
  • Email server software such as Exchange, Sendmail or Postfix
  • Network scanners or PBX phone systems
  • Embedded Linux Devices

If your software isn't listed it doesn't mean that it won't work - you can either contact us or just signup for an account and try it, we do offer a money back guarantee.

Professional and Responsive Support

We are proud of our reputation in offering a highly responsive customer support service and we always looking at ways it can be improved. On our website we have setup guides for many of the popular email programs, troubleshooting guides, common error resolution articles and an extensive knowledge base.

In our online control panel you can view the status of your account and check for any errors that are being logged. If you are unable to resolve the problem using those resources you can contact our support team for a prompt and helpful response.

Expert Deliverability Advice

If you are having issues with email deliverability just simply swapping your SMTP settings to AuthSMTP may resolve the issues for you.

If they do not, we have support staff with expert knowledge in troubleshooting email deliverability problems and can guide you through a troubleshooting process and make suggestions in how to improve your email reputation.

Strict Anti-spam Policy

We operate a strict anti-spam policy - we have a number of measures and safeguards in place to detect abusive or malicious behaviour, any users found intentionally abusing our service will have their accounts cancelled without notice.

This policy ensures that we maintain a clean and reputable network for our clients that wish to send personal / business correspondence, opted-in marketing emails, transactional emails, technical notifications or any other form of permission based email.

Clean & Monitored IP Addresses

We monitor the reputation of our network and individual IP addresses with other providers and blacklists ensuring any issues are dealt with promptly.

Spam Complaint & Bounce Reporting

Spam complaints and bounce notifications are a key part of managing your mailing list or contact database because they allow you to keep you contact list up to date and clean.

We operate spam complaint feedback loops with many of the major email providers, this allows us to receive notifications for messages sent from our network that are reported as spam, our systems automatically trace these complaints back and notify the sender of the email allowing them to investigate or remove the address from the list.

We do not intercept delivery status notification (bounce) emails - if you send a message to an invalid email address or a message is rejected outright for any reason you will receive a standard delivery notification back to the address the messages was sent from again allowing you to take the necessary action.

Blacklist Monitoring & ISP Feedback Loops

We monitor the reputation of our network and IP addresses. We monitor public blacklists, commercial spam filtering services and other IP based warning lists, we also operate feedback loops with the major email providers - this allows us to monitor the overall reputation of our network and actively deal with any issues before they start to impact on the service.

Multiple Backbone + Redundant Network Connectivity

Our network is spread across multiple interconnected, geographically diverse data centres each with high speed connections and many routes onto our network to minimize the impact of outages with our upstream providers.

High Availability & Redundancy

Our systems are designed to be both high performance and reliable. Monitored 24 x 7 and self-repairing to provide high levels of availability.

Redundant & Planet Friendly Hardware

We care about our planet - power usage and efficiency plays a big part in the way we select network equipment and we have gone to great lengths to source hardware that is reliable and powerful but at the same time is power efficient.

Our hardware platform is designed for resiliency to help prevent hardware failures impacting performance but we always keep 'hot' spares available to replace faulty equipment.

Industry Standard Network Monitoring

We use industry standard network monitoring software from a number of local and remote locations to proactively monitor the availability and performance of our service, this monitoring system operates 24 hours a day and is capable of alerting our network engineers to issues so that they can be quickly addressed before they start impacting general service availability.

10+ years Experience of Email Delivery

AuthSMTP has been providing SMTP email services for over 10 years - we take pride in offering a stable, reliable and professional service with the best possible responsive customer support.

PRICING

AuthSMTP accounts start at a very low cost per year and for your peace of mind we also also offer a full money back guarantee.

How many messages do you want to send per month?