Features for Digital Agencies


Interspire Email Marketer ROI Calculator

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Predicted revenue per client, per month from private label email marketing solution:
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Use Interspire Email Marketer to offer email marketing to your clients


Private label, email throttling, sending limits, individual user accounts and profiles, complete PHP source code, fast deployment, seamless website integration and standards-compliant email templates are just some of the features we built from the ground up to help you provide a profitable email marketing service to your clients.

For web designers, ISP's and advertising agencies looking to offer a powerful, customizable and proven email marketing solution to their clients, Interspire Email Marketer includes everything you need to be up and running in under an hour, including:
  • Private label - It's fast, free and easy to add your own company logo, color scheme and change the "Powered by" text in Interspire Email Marketer to whatever you like. You can customize the look of Interspire Email Marketer to match your branding, so your customers won't ever know that they're using Interspire Email Marketer. Here are a few examples of Interspire Email Marketer running as a private label solution:

    Examples of Interspire Email Marketer running as a private label solution
    (Click the image for a larger version)

    "Interspire Email Marketer had the number one feature I was looking for... it was 'Rebrandable', no conditions or restrictions. As a PHP coder, I didn't have the time to develop a PHP mailing app myself, so this fit the bill. Access to full PHP source code gave me the freedom to tweak, modify or change whatever I wanted."
    phpuck via the Interspire Blog


  • Individual user accounts and profiles - Each of your users has his/her own unique Interspire Email Marketer control panel login. When they login they will only see their own mailing lists, images, templates, campaigns and statistics. They can never see your other clients sensitive email marketing data.

    "I purchased Interspire Email Marketer because I heard from a friend that Interspire has excellent support (which I have to agree with. They've always gone above and beyond to help me), the price of the product was very affordable, and the fact that it allows multiple user accounts, with separate mailing lists, templates, etc."
    Dan S via the Interspire Blog

  • Fast Deployment - You can literally be up and running less than an hour from now. When you purchase Interspire Email Marketer from our site you receive the Interspire Email Marketer files and license key immediately - even if it's 2am where you are. Then, you just upload the files to your server and run through the browser-based install wizard. The database is automatically created for you and then you're ready to setup your private label options.

  • Standards-Compliant Email Templates - Interspire Email Marketer includes professionally designed email templates that your clients can use as the basis of their email campaigns. On the other hand, if you have already designed an email template for your client they can use that too.


    Interspire Email Marketer includes professionally designed email templates
    that are easy to customize and your clients will love

    "The first thing that strikes you about Interspire Email Marketer is that it's a bargain. Really. Prior to installing the first of many Interspire Email Marketer sites, we had been using some of the hosted solutions with per email costs. The second standout of Interspire Email Marketer is that it is so easy to use. As a design company we like to focus on content rather than engineering, and for our clients that use Interspire Email Marketer, they like the control they have over lists, statistics, and email newsletters."
    Simon Darby, darbyid.com

  • Email throttling and sending limits - With Interspire Email Marketer it's easy to restrict the number of emails your clients can send per hour, per month or in total. Once they reach their limit email sending will be disabled.

    Throttling limits are set on a per-user basis in Interspire Email Marketer


  • Complete PHP source code - Interspire Email Marketer comes with 100% unencrypted PHP source code which you can modify if required. For example, many of our customers like to add their own tabs to the control panel or integrate links back to their other services directly inside the menu.

  • Seamless Website Integration - You can easily create email subscripion forms to place on your client's web sites so visitors can signup to their mailing list. You can also generate unsubscribe forms and "modify detail" forms so everything is automated and you'll never be asked to remove someone from your clients mailing list - because they can unsubscribe themselves.

  • Pay Once, Charge Your Clients Monthly - When you buy Interspire Email Marketer from us you only make a one-time payment and nothing else. You're then free to charge your clients to use Interspire Email Marketer however you like - weekly, monthly, yearly, per-campaign, per number of emails sent, etc. Your clients will appreciate the flexibility of being able to pay weekly/monthly/yearly instead of paying one large payment upfront - and it makes a great recurring revenue generator for you with little work.

"Before switching to Interspire's Interspire Email Marketer we were quite miserable using a competitor's hosted solution. Not only did it take 2 to 3 days to complete mailing to our subscribers, but there were very few features to the program and every month we were being hit with "overage" charges for the size of our list.

Since making the change to Interspire Email Marketer, we've actually been able to reach out to our subscribers and use our newsletter as the tool it is. Interspire Email Marketer is simple yet robust and we're now sending out about a quarter of a million messages in less than twelve hours! [with the help of a local MTA optimization expert]

We couldn't be happier with this solution from Interspire. I would recommend Interspire Email Marketer to anyone who doesn't only want a newsletter system, but wants a complete solution that remains simple to use."
Jordan Hahn, Webmaster of StephenKing.com

Enterprise Level Features


Interspire Email Marketer includes all of the features you'd expect to find in enterprise level email marketing software, but without the expensive price tag, making it easy for your clients to get started right away:

Build A Subscriber List

  • Accept new subscribers directly from a web site
  • Add subscribers to the database one at a time
  • Upload existing subscriber list directly
  • Export subscriber list at any time

Your Clients Can Create Professional Emails

  • Choose from dozens of professional email designs
  • Clients can upload their own images to include in emails
  • If your clients can use Microsoft Word they can use Interspire Email Marketer
  • Your clients can create eye-catching, highly responsive email messages

Your Clients Can Send Personalised Messages

  • Address subscribers by their first name
  • Send based on specific criteria such as gender
  • Include subscriber details in email content
  • Include customer preferences in email content

Follow Up Automatically With Autoresponders

  • Your clients can put their email marketing on autopilot
  • Send unlimited autoresponders to subscribers
  • Include subscriber details in autoresponders

Access to Detailed Campaign Statistics

  • See who opened each email and when they opened it
  • See who clicked on links in each email and when
  • See how many people subscribe to each list over time

Interspire Email Marketer is Easy to Use


The Interspire Email Marketer interface is slick, uncluttered and easy-to-use. For Interspire Email Marketer we spent days making sure the layout feels right, so your clients can jump right in and get started. Without having to read a 200 page manual.

"We have a few people managing our email campaigns but not everyone has the HTML expertise to create a newsletter from scratch. Interspire Email Marketer enables our non-technical staff to easily create and send important announcements to our list within minutes."
Dave Wagner, NewsBoys.com


Rock-Solid Stability and Robustness

Interspire Email Marketer is one of the most mature email marketing solutions available online. Since its first release in 2003, it has been constantly improved and optimized, and can now flawlessly send hundreds of thousands of emails from a standard shared server setup.

Before the initial released of Interspire Email Marketer we spent days rigorously testing it to make sure it could handle even the largest of mailing lists on a standard shared server setup. Our test results and details are shown below.

To prove just how stable and robust Interspire Email Marketer is, we ran multiple sending tests before its release. Each test was performed three times, and we took the average results from each test.

The specifications of the testing server:
  • Intel Pentium 4 CPU 2.66GHz
  • 512MB RAM
  • 512MB virtual swap file
  • Light HTTPD 1.4.11
  • PHP 5.0.4
  • MySQL 5.0.15
  • Postfix 2.2 MTA
The specifications of the email message:
  • A HTML-only email
  • Based on the business #1 layout
  • Images were embedded
  • Tracking links was enabled
  • Tracking opens was enabled
* Note: All emails were sent using Interspire Email Marketer's scheduled sending feature which uses cron to send emails and doesn't require you to keep your web browser open.

Interspire Email Marketer's sending speed was tested and measured up until the outbound email reached the internal mail server. Looking at the image below, we tested the speed from points 1 to 4:

  1.  Database  In our testing we used a slightly optimized version of MySQL 5.0.15. The database is used to store and retrieve the content of the email, as well as the list of email addresses that the message is sent to.

  2.  Interspire Email Marketer  Obviously we used Interspire Email Marketer for all testing. Interspire Email Marketer has two sending options: the "popup method" which sends incrementally via a web browser or the "scheduled method" which uses cron and doesn't require your browser to be opened. For our testing we used scheduled sending.

  3.  PHP's mail command  Interspire Email Marketer's first and foremost job is to create an email message (including HTML, attachments, etc) and send it off to your server's mail transfer agent (MTA). PHP's mail command does just that.

  4.  Internal mail server  The internal mail server's job is to make sure each email is sent from your mail server to the recipients mail server.

  5.  Recipient mail server  Receives the email originally created by Interspire Email Marketer and sent using your internal mail server.
The reason we don't also test point 5 is because the speed at which the email goes from the internal mail server to the recipients mail server is beyond the control of Interspire Email Marketer and can vary greatly depending on hardware specifications, bandwidth, etc.

The results of our test are shown below. As mentioned earlier, each test was performed three times, and we took the average results from those tests.

List Size Date Database Time
1,000 9th Feb 2007 MySQL 56 seconds
5,000 9th Feb 2007 MySQL 282 seconds
10,000 10th Feb 2007 MySQL 580 seconds
20,000 10th Feb 2007 MySQL 1,277 seconds
50,000 10th Feb 2007 MySQL 2,899 seconds
100,000 11th Feb 2007 MySQL 6,449 seconds

"[Interspire Email Marketer is] much much faster. We were blown away by it's speed. Seems similar to the old features but it's far more intuitive. Your benchmarks seem right, and I'll have more for you soon, but it looks like a real winner! Really nice work. Please tell Cris he's a genius. And this was super-well debugged. Great testers there!"
Steve, AgencySF.com

Fast and Painless to Install


Interspire Email Marketer takes about 10 minutes to install from start to finish. As soon as you purchase, you receive access to our client area where you can download Interspire Email Marketer and generate your license key. After that, it's just a matter of running the web-based installation wiziard and you're done.

If you'd like us to install Interspire Email Marketer for you then we can do that too - free of charge, of course. Just send through an installation request from our client area after you order. We have a team of dedicated Interspire Email Marketer experts who will install Interspire Email Marketer and have everything up and running for you within 24 hours.

"Interspire Email Marketer is the most effective program we've used for direct email marketing. It's easy to use and handles all our needs from maintaining subscriber information to sending out great looking newsletters. With no per email costs, it gives us functionality at a great price."
Shara Kateberg, InPop.com

Who Uses Interspire Email Marketer?


Interspire Email Marketer is already used by thousands of web designers in over 50 countries around the world to offer private label email marketing services to their clients. Here are some of our recent customers:
  • ClearPixelDesign.com
  • CoolMedia.com.au
  • CypressInteractive.com
  • GlobalIQ.com.au
  • i-Media.com
  • MartilenniConsulting.com
  • Nextwave.com.au
  • Pagematic.com
  • RedTail.co.uk
  • WebNational.com.au
  • Wilson-Cooke.co.uk
  • ... and many more

Why Did Existing Customers Choose Interspire Email Marketer?


We wanted to know why our existing customers chose Interspire Email Marketer as their email marketing solution so we setup a blog and asked for their feedback. See the blog post.

"There are 2 things that clearly make Interspire and their products leaders in the Industry:

1. Client support is the most superior we know of with any company we have dealt with. We deal with International Corporations all around the Globe, and most could take a leaf out of the Interspire Book

2. Interspire Email Marketer - The world's leading newsletter software for PHP is not an understatement. We have tried and tested 10 of the topline E-Letter creators in todays Market, and nothing even comes close - we will challange aynone or company to prove us wrong.

We cant be anymore exact or honest than that. Thanks you guys for living up to your promises!! From All of Us here and around the Globe."
Hui Martin, manamedia.com.au

100% "No Questions Asked" Money Back Guarantee


We're so convinced you'll absolutely love Interspire Email Marketer that we're willing to offer a 60 day, risk free money-back guarantee. If at anytime within 60 days of purchasing Interspire Email Marketer you are unhappy, then simply let us know and you'll receive your money back. It's as simple as that!

Here's How to Get Started:


Getting started with Interspire Email Marketer is easy, and we're here to help -- every step of the way! Here's how to get started:
  • Click here to see pricing for Interspire Email Marketer and to buy online via immediate download.

  • Follow the simple order process. Once you've paid for your order, you will be able to download Interspire Email Marketer immediately from our client area.

  • If you need help with installation, you can then request a professional install. If you feel comfortable installing Interspire Email Marketer yourself then you can do that also.

  • Finally, remember that we offer a 60 day, 100% no-questions-asked money back guarantee to all our customers.