It’s a great idea to test how YOUR message stacks up before you send it out.

Lyris’ Content Checker ( tells you how your newsletter ranks in Spam Assassin. All you do is copy your newsletter text and paste it into the box on their site. They’ll run your free report and e-mail a copy to you. It usually arrives within minutes.

The report will tell you exactly which words are costing you points. Usually you should only be concerned if your score is over 5 points. If so, you can either delete those words or disguise them.

Other content checkers you can refer to are:

How To Limit The Emails Sent Per Hour

Note: To be able to use this option you need MailBoy 2004 build 1067 or later.

As many of you should already know, many ISPs limits the number of emails that can be send through their SMTP servers. In order to fit to the ISPs requirements and still be able to send your newsletters without paying much attention on the sending program you have to be able to set the program to send a limited number of emails per hour. This way the program will run smoothly without the risk of being blocked because of the limit violation.

In order to help our customers dealing with this problem, we have implemented a new feature in MailBoy. It is the Limit-Per-Hour option available on the Options dialog of the program.

To enable this option, you have to check the checkbox where it says “Do not set more than” and to set the number of the emails than can be send per 1 hour.

For example, if your ISP has a limit of 200 emails that can be send per 1 hour, then you have to set the “Do not set more than” option to 200. And please, do not forget to enable the option by checking it.

It is recommended that you set the limit value a little less than you need,because it is not 100% accurate, unless you use 1 thread and low timeout. So, if your limit is 400 emails per hour, set it to 380, for example.


If you are using an external SMTP server as a delivery method, please make sure your Threads Count is set to 1-2! This is to ensure that the SMTP server will not be overloaded and start rejecting connection with your computer.

If you have any problems using this option, please do not hesitate to post here in the forum or contact our support.

How To Set The Program To Auto-Retry To Send To Failed

Note: To be able to use this option you need MailBoy 2004 build 1067 or later.

We have received several requests from our customers to modify the re-sending to the failed email addresses so it can be configured to auto-retry the sending for a given number of attempts.

This feature is now implemented in the program and it is available from the Options dialog where it says “Try to re-send to failed mail addresses”. After that there is a field where you can type the number of the attempts that the program will retry to send to the failed email addresses.

Note: If the value of the retry attempts is set to 0, then the program will not try to re-send after the initial sending is finished.

If you have any problems using this option, please do not hesitate to post here in the forum or contact our support.

How to send HTML messages with images

If you want to have a HTML message with pictures included, all you have to do are two things:

1. Upload the picture on your web hosting. If you don’t have one, you can use one of the thousands free hostings in the internet.

2. In the html code of your message, you’ll have to replace the IMG tag, which looks like this:

<img src=”….” alt=”Picture heading” width=”120″ height=”35″>

the “…” part with the URL address of your picture which is uploaded in your web hosting. For example if your web hosting address is:

and the picture’s name is


then your picture’s URL will be:

and the IMG tag will be:

<img src=””>

just replace it with the one generated from your favorite html editor, like Word or Front Page and that’s all.

This way of embedding images in your html message is the preferred one for the most people, because of the saving of the bandwidth. In this way you do not attach the picture directly to the message and the message becomes smaller and will be sent several times faster.

How to create formatted email messages using MS Word


Here is in few steps how to create formatted text with hyperlinks in MS Word and send it using MailBoy 2004.

First, start MS Word and type the text for your message and format it as you like. You can include hyperlinks if you like.

Note that you must not include pictures as they will not appear in the message, because of the specific html formatting that MS Word produces. If you want to have pictures in your message, you have to add them as described in this article.

After the message is ready and formatted, save it as a web page using the File menu:

Now in MailBoy 2004 use the “load” button located bellow the message box and browse the file you have saved from MS Word as a html page.

DON’T FORGET TO CHECK THE “Send as HTML message” OPTION below the message box before sending:

I hope this will help. If you have more questions, please do not hesitate to contact us.

How to use an external SMTP server for sending emails

Why is this feature needed ?

MailBoy has a built-in SMTP server for sending the messages directly from your PC to the recipient’s mail server (without using any ISP SMTP server). This is the fastest and preferable method for sending email messages.

However for the correct work of the program, you need to have access to port 25.

If you’re operating within a restrictive firewall, as most users of large ISPs do, then you won’t be able to use MailBoy’s built-in SMTP for sending the messages, because of the blocking of port 25.

Most of free ISP’s such as Juno, WorldShare, EarthLink, NetZero, and others block the port 25 and will only allow you to send email using their email servers. In this case you will need to use the SMTP server of your Internet Service Provider to deliver your message.

This is why we’ve implemented in MailBoy the ability to use an external SMTP server for sending the messages.

How it works ?

First, MailBoy sends a message to the external SMTP server. This server puts your email in outgoing message queue, the message is sent to your correspondent’s mail server. And only after that, your correspondent can receive it.

If the server is not overloaded, delivering a message takes just a few seconds. But this also might take a longer time.

When to use it ?

If your messages failed to send you have tried everything described in this article,
and still no success sending a message out. Then it is most likely that your ISP is blocking port 25 and you have to use an external SMTP server in order to be able to send messages.

How to use this feature ?

You can set the usage of an external SMTP server from the Options dialog of the program:

  1. Check the option “Use external SMTP server to deliver the messages”
  2. For “SMTP server” fill the address of your ISP’s SMTP server. If you don’t know it, please asko your ISP about it.
  3. Set the “Port” to 25, except if your ISP have stated some other port for using its SMTP server. In that case, fill the value required by your ISP.
  4. If the external SMTP server requires authentication, then check the option “This SMTP server requires authentication” and fill your user name in the “Login” field and your password in the “Password” field.

This is it. You are now ready to send the messages using an external SMTP server. If you want to switch back to using the program’s built-in SMTP server, just uncheck the “Use external SMTP server to deliver the messages” option from the Options dialog.


Set the optimal Threads Count

More of the ISPs will not allow you to send high volume email campaigns through their SMTP servers, because they have set sending limits. The limit could be the number of messages allowed to be send within an hour or a day, etc. So, be sure not to set high value for the Threads Count (in the Options dialog). This way you will also prevent oveloading of the SMTP server.

If your mail list is less than 1000 or few thousands, the best is to set the Threads Count within the 1-5 range. Don’t worry, the messages will be sent fast enough, except if the SMTP server is currently busy (or overloaded).

Sending Emails with MailBoy 2004 – STEP BY STEP Guide

I have received few requests on writing a step-by-step guide for sending emails with MailBoy. So, here it is  :-)

First, you have to load the list with emails.

To load an email list you have to click the “add” button bellow the “TO (mail list)” field:

After clicking the “add” button the dialog called “Add Mail List” will appear.

Fill the name of the list with whatever name you want (this is not important).

After this click the “Load Mail List” button on the dialog and browse your mail list:

The mail list that you will load have to be in text format with a single mail in

each line. If not, then use the “Import Mails” button instead of “Load Mail List”
button. It will extract all the emails in specified file, no matter their position.

After the mail list is added, you have to choose which email you will send the message
from. You can do this by selecting one of the accounts in the “FROM (account)” drop-down

If you don’t have a “from” account added yet, you can do this by clicking the

“add” button bellow the “FROM (account)” field. A dialog called “Add Account”
will appear, fill it and click the “Save” button:

Note that the info which you fill in this dialog will appear in the “Sender” field of the

recipient’s mailbox:

Now you are ready to write the message and send it:

Just hit the start button and the program will start to send the message to the

emails in the mail list that you’ve created. You can watch the status of sending
in the “SENDING STATUS” box in the program.

I hope this guide will help. If you have more questions, please do not hesitate to contact us.