Perhaps you were wondering...?

Spotlight Mailer is a Web-based email marketing software that includes everything you need to design, send, track, and achieve a solid return on investment from email marketing.

Each Spotlight Mailer license is associated with one LuxSci user. Once you have Spotlight Mailer, you can access Spotlight Mailer from your LuxSci account and start creating your contacts, mailing lists, and emails. Spotlight Mailer's intuitive interface and predesigned templates make it easy for individuals with limited technical expertise to create and send emails.

Watch out Spotlight Mailer Video: Getting Started: Usage Overview

The cost of a license depends on whether your LuxSci High Volume Account has a dedicated server. If you don't have a dedicated server, the cost is $25 per month. If you have a dedicated server, the cost is $50 per month.

Spotlight Mailer contains over 100 professionally designed templates, both generic and industry specific, that you can tailor to create a campaign-specific email. You can create content using the WYSIWYG editor or upload information from your computer or the internet. The templates included with Spotlight Mailer have been tested to ensure compatibility with all popular email clients. Alternately, you can create your own custom templates or import existing campaigns and templates. Spotlight Mailer's image hosting ability lets you upload any number of images.

Spotlight Mailer lets you preview your email messages to make sure that you like what you see. You can check to see what your email will look like in popular email programs and adjust the design as needed before it is sent. The SPAM checker function evaluates your message for SPAM-like content so that you can edit the text and maximize deliverability.

Spotlight Mailer allows you to send to many lists at once and will eliminate duplicate recipients. Split testing lets you try different versions of your message to see which is more effective.

Scheduling options enable you to send your email blast now or schedule it for the future. Spotlight Mailer automatically handles unsubscribes, opt-ins, and bounces.

Spotlight Mailer's reports answer your important questions.

  • Who opened which emails and when?
  • Who clicked on what link and when?
  • How many bounces and why did they occur?
  • Who unsubscribed and who forwarded the email to friends?

You can also take advantage of Google Analytics for more in-depth analysis.

Other questions? Call Sales

Spotlight Mailer Feature List

Design Features

More Than 100 Professionally Designed Email Templates
Use any of the many industry-specific email templates included.
Templates Designed for Maximum Display Compatability
The included templates have been tested to work with all popular email clients (including Gmail, Yahoo, Hotmail, and Outlook).
Create Unlimited Number of Custom Templates
Design and store as many custom email templates as you like.
A built-in WYSIWYG editor email template editor allows you to easily format text, upload images, and more. Edit the raw HTML as well if needed!
Import Campaigns and Email Templates
Upload or import existing email campaigns and templates from your computer or web site.
Image Hosting
Upload any number of images with free image hosting.

How Fast Can You Send Email?

Choose the most powerful server that you can afford. If speed is a factor, a more powerful server will deliver your messages faster. If budget is limited, a less powerful server may still get your message out in an acceptable time frame.

Dedicated Server Size

Micro Medium X-Large 2X-Large
Maximum msgs/hr 42,000 86,000 160,000 270,000
Spotlight Mailer Max/hr 32,000 64,000 85,000 100,000
Expected msgs/hr 20,000 40,000 80,000 160,000
Expected msgs/day 500,000 1,000,000 2,000,000 4,000,000
Recommended # connections 3-4 6-8 12-16 16-24
Sending Rate

The sustained rate at which you can send email messages is based on many factors:

  1. Shared vs. Dedicated
  2. Dedicated Server power
  3. Email Marketing Program used
  4. Use of SMTP Pipelining
  5. Use of SSL/TLS
  6. Proper use of Concurrent connections
  7. Network speed between you and us
  8. Message size
  9. Recipient server and DNS performance
  10. Blacklisting and Greylisting
  11. Recipients/message
  12. Message Processing
Maximum Rate The "maximum sending rate" (msgs/hr) is a theoretical maximum rate that you can get through the service. It assumes optimal sending conditions: very small (1 KB) messages, through a very fast network connection, all to the same recipient domain, where there is no blacklisting or greylisting, where SMTP Pipelining is used without SSL, and where the recommended number of concurrent SMTP connections is employed.
Spotlight Mailer Maximum Rate

The "maximum sending rate" (msgs/hr) for Spotlight Mailer is a theoretical maximum rate that messages can be sent from Spotlight Mailer under the same optimal sending conditions: very small (1 KB) messages, all to the same recipient domain, where there is no blacklisting or greylisting, and where SSL is not used. Spotlight mailer is has an extremely fast connection to the SMTP server, uses SMTP Pipelining, and uses 4 concurrent connections.

Actual throughput with Spotlight Mailer will be less based on the other factors which affect sending rate: SSL, Message size, Recipient server and DNS performance, blacklisting and greylisting, and any additional processing being performed (e.g. anonymization or encryption).

Expected Rate Under realistic sending conditions, you may find your sending rate to be closer to the listed "Expected" rates, assuming that you also use SMTP Pipelining, 1 recipient per message, no SSL, have moderately small messages, use a good email sending program, and use the recommended number of concurrent SMTP connections.
Expected Daily Rate This is an estimate of the number of messages that you could send in 24 hours of sustained sending at approximately the "Expected" hourly rate.

Sustained vs Burst Rate

For some customers, the speed of sending is very important. There are two significant modes of sending:

Sustained Rate

Sending at a consistent rate for a long period of time. E.g. 20,000 messages/hour for minutes or hours. Sustained rates are relevant when sending an email marketing blast to a large subscriber list.

Burst Rate

A "burst" refers to sending a bunch of messages in a very short time; e.g. 25 or 50 messages within a second or two. Burst differs from "sustained" in that when you are not "bursting" you are sending one or a few messages here and there ... infrequent sending. Bursting is relevant for transactional email messages when you are sending them "as needed" but require the ability to send many at once should that need arise, as it will.

Sending speed is important for customers who need to send large mailings at a sustained rate. Understanding sending speed helps you determine how long it will take to send that blast to 100,000 subscribers.

Factors Affecting your Sustained Sending Rate

There is a theoretical maximum number of messages/hour that any server can manage. How fast you can actually send is affected by a number of factors.

1. Shared vs Dedicated

Dedicated servers will generally be faster. On shared servers, you must share the server sending capacity with others and thus you do not have control over the capacity available to you at any particular time.

2. Dedicated Server Performance Level

More powerful dedicated servers can handle more concurrent connections and thus give you higher sending rates.

3. Email Marketing Program

Different email marketing programs have different capacities for how efficiently they can send bulk email. Simply switching from one program to another can increase your throughput significantly.

LuxSci Spotlight Mailer is a very efficient program.

4. SMTP Pipelining

Use an email marketing program (like LuxSci Spotlight Mailer) that supports SMTP Pipelining. With this feature, the program opens a single authenticated connection to the server and sends multiple messages in succession over that connection. This is significantly faster than opening a new connection and logging in again for every single message to be sent.

LuxSci Spotlight Mailer uses SMTP Pipelining.

5. Use of SSL

SSL is extremely useful for security and for the protection of your username, passwords, and message content. However, when using SSL, your email marketing program and your server must perform work encrypting and decrypting all of your messages. This overhead will slow down your rate of sending.

LuxSci Spotlight Mailer does not use SSL by default as the connections are between LuxSci servers behind LuxSci's firewalls. SSL is not needed in this case.

6. Concurrent Connections

If your program can open 2 connections to our SMTP servers at the same time and send two messages at once, then your sending rate can generally be twice as fast. Depending on how powerful your server is and how slow your network connections are, you can use more and more concurrent connections to achieve higher and higher sending rates. Combined with SMTP Pipelining, an appropriate number of concurrent connections goes a long way to maximizing your throughput potential.

The recommended number of concurrent connections for best results in sustained sending are given for each server type on the Pricing page.

Note, however, that if you use more concurrent connections that is recommended, then you are likely just over-working your server. That results in your sending rates actually getting slower. Stick to the recommended number of concurrent connections.

LuxSci Spotlight Mailer uses 4 concurrent connections for all customers - dedicated or shared. However, due to the lack of network speed issues slowing down each Spotlight Mailer connection, this behaves effectively like 8 concurrent connections.

7. Network Speed

Your messages must be transmitted from your email marketing program to our servers. The speed of your network and the distance between your sending computer and our servers can significantly impact the maximum rate that you can send messages.

For example, LuxSci Spotlight Mailer sends from a server right next to your outbound email servers and thus network speed is not a factor. For someone connecting from outside of LuxSci or internationally, the speed can slow down significantly.

8. Message Size

Like network speed, the larger your messages are, the more time it will take to transmit them from your email marketing program to our servers. For example, on a fast network, increasing message size from 1KB to 1MB decreased throughput by 50%. The actual impact of size on you will depend greatly on your network speed and other factors.

9. Recipient Email Server and DNS Speed

In order for our servers to deliver messages to your recipients, they have to (a) look up where to deliver the messages to (DNS), and (b) talk to those servers to deliver the messages to them. If the DNS lookup as slow or the recipients are in domains that no longer exist, this step can be slow. If the recipient email serves are overloaded, have a slow network, or are having other issues, then the delivery phase can be slow. Delivering many messages to recipients with these issues will slow down your entire sending process... as other messages have to wait for these to be sent.

You can get around this recipient slowness issue by using our "Anonymous SMTP" ports (587, 6025, and 6465). In this case your messages are immediately queued on our servers and delivered "later". This does not speed up the actual time to when the recipients get the messages (it will in fact slow that down); however, it will speed up the rate that your email marketing program delivers those messages to our servers.

10. Blacklisting and Greylisting

If your email content or sending patterns have gotten your server blacklisted or greylisted, then delivering email messages to recipient servers that are now blocking you or deferring you can slow down your delivery rates.

11. Recipients per message

Most email marketing programs send a separate message to each recipient. This allows them to track opens, views, etc. However, if you send each message to many recipients (e.g. 100s of recipients), then your sending program has significantly fewer messages to deliver to our servers and this process can happen 10s or 100s of times faster than if you sent in the usual one recipient/message pattern.

Additionally, if each message contains only recipients in a specific domain, then actual delivery to these recipients will be expedited by this efficiency. E.g. If you are sending to 500 AOL users, instead of sending 500 individual messages, send one message with all 500 AOL users listed as "BCC" recipients. Delivery will be almost 500 times faster.

12. Outbound Processing

If you are using SMTP Anonymization, or if you are using email processing features that come with Premium High Volume (e.g. content scanning, recipient restrictions, SecureLine email encryption, etc.) then the messages will be queued and processed and then sent on to their recipients as appropriate. These steps will slow down message delivery.

Dedicated accounts ready in 0-3 business days

Multiple Spotlight Mailer logins available

Free 30-minute training call included

Welcome to LuxSci!

*for non-dedicated-server orders placed between 9am and 10pm Eastern Time, USA. Provisioning can be delayed due to issues validating orders.

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