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:

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
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

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)

Throttling limits are set on a per-user basis in Interspire Email Marketer
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
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:
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)
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:
The specifications of the email message:
* 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:

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 Donald (AgencySF.com)
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)
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:
|
|
|
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)
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!
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: