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A Beginner's Guide to CDOSYS

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4.08 (13 votes)
5 Sep 2003
Use CDOSYS instead of CDONTS on Windows 2000/XP

Sample Image - cdoex.gif


Use this example to allow users of your website to submit feedback and send emails using IIS and its SMTP service.


CDOSYS is the successor of CDONTS, an easy way to send emails from webpages. Unfortunately, CDONTS was discontinued in Windows XP, so web authors must now use CDOSYS instead. CDOSYS is as easy to use as CDONTS, however CDOSYS also allows authors to create much more sophisticated emails using html and datasources.


  • Windows 2000/XP
  • SMTP Service for IIS installed
  • Run this sample on your own computer with IIS installed.
  • Put the files in a web server directory.
  • Do not open the htm page in Windows explorer and expect it to work. You must use the internet so that IIS is involved in the processing. For example, will work. c:\downloads\sample1\sample1.htm won't work.
  • Using JScript as the .asp language doesn't work as easily as vbscript does.

Using the code

The first step is to call the components into action...

Dim iMsg
Set iMsg = CreateObject("CDO.Message")
Dim iConf
Set iConf = CreateObject("CDO.Configuration")

Step 2 involves verifying the correct configuration settings...

Dim Flds
Set Flds = iConf.Fields
Flds("") = 1
Flds( _
 "") _
  = "c:\inetpub\mailroot\pickup"

Be especially mindful of the path in the code above. Step 3 shows how the message is constructed...

Set iMsg.Configuration = iConf
iMsg.To = Request.Form.Item("Email")
iMsg.From = ""
iMsg.Subject = Request.Form.Item("Subject")
iMsg.TextBody = Request.Form.Item("EContent")

The Request.Form.Item grabs the data posted to it from the form on the sample1.htm page.

Points of Interest

This is really the tip of the iceberg. There is so much more that you could do with CDOSYS (and CDOEX). See for more details...


  • Sept. 6/03 - Posted this article


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

Web Developer
Canada Canada
It's Frum the Slum

Comments and Discussions

GeneralMy vote of 5 Pin
Manoj Kumar Choubey27-Apr-12 1:30
professionalManoj Kumar Choubey27-Apr-12 1:30 
GeneralMessage Body Truncated Pin
ravi_bhartiya3-Jun-09 22:34
memberravi_bhartiya3-Jun-09 22:34 
GeneralThanks!!!!!!! Pin
alimzhan23-Jan-09 13:19
memberalimzhan23-Jan-09 13:19 
Generalsender's name along with words in subject Pin
BrendaBachman2-Mar-06 3:00
memberBrendaBachman2-Mar-06 3:00 
Generalcreate a .eml file and i move that eml file in the specific folder Pin
jituyadav6-Feb-06 20:40
memberjituyadav6-Feb-06 20:40 
GeneralFirst-Last Name Values Pin
rob365-Oct-05 9:29
memberrob365-Oct-05 9:29 
Generala question Pin
fly0912-Mar-05 18:10
memberfly0912-Mar-05 18:10 
GeneralRe: a question Pin
ghle2-Dec-10 9:03
memberghle2-Dec-10 9:03 
fly09 wrote:
If the SMTP server requires authentication, this won't work .
Can you tell how to do ?

You need to know your SMTP Server. Replace "mail-fwd" with your SMTP server.
.Item(cdoSendUsingMethod) = 2 sets the authentication method.

Dim objCDOConf

Set objCDOConf  = Server.CreateObject("CDO.Configuration")
With objCDOConf.Fields
    .Item(cdoSendUsingMethod) = 2
    .Item(cdoSMTPServer) = "mail-fwd"
    .Item(cdoSMTPServerPort) = 25
    .Item(cdoSMTPconnectiontimeout) = 10
End With


GeneralJScript (Using ASP and MYSQL) - EMail Pin
Kush Mashru8-Feb-05 4:53
sussKush Mashru8-Feb-05 4:53 
GeneralHelp Pin
Anonymous28-Sep-04 4:43
memberAnonymous28-Sep-04 4:43 
GeneralRe: Help Pin
Anonymous10-Oct-04 18:58
memberAnonymous10-Oct-04 18:58 
Generalmessages not being sent Pin
griffett24-Jun-04 3:19
membergriffett24-Jun-04 3:19 
GeneralRe: messages not being sent Pin
mods20051-Mar-05 4:48
membermods20051-Mar-05 4:48 
General[Message Deleted] Pin
spankle15-Jun-04 7:02
memberspankle15-Jun-04 7:02 
GeneralRe: CDOSYS vs CDONTS Pin
Anonymous15-Jun-04 18:00
memberAnonymous15-Jun-04 18:00 
spankle15-Jun-04 7:00
memberspankle15-Jun-04 7:00 
GeneralDoesnt work Pin
MaxxxDamage23-Apr-04 19:19
memberMaxxxDamage23-Apr-04 19:19 
GeneralRe: Doesnt work Pin
raviegopal8-Jun-04 21:16
memberraviegopal8-Jun-04 21:16 
GeneralRe: Doesnt work Pin
steve72826-Jun-04 6:55
membersteve72826-Jun-04 6:55 
GeneralRe: Doesnt work Pin
Anonymous29-Oct-04 1:23
memberAnonymous29-Oct-04 1:23 
Questionc:\inetpub\mailroot\pickup ????? Pin
zahidrahim12-Mar-04 19:15
memberzahidrahim12-Mar-04 19:15 
AnswerRe: c:\inetpub\mailroot\pickup ????? Pin
Anonymous21-Mar-04 6:57
memberAnonymous21-Mar-04 6:57 
GeneralI cant download the zip Pin
Anonymous1-Feb-04 9:06
memberAnonymous1-Feb-04 9:06 
GeneralImage Pin
Anonymous11-Dec-03 9:41
memberAnonymous11-Dec-03 9:41 
Questionand jscript? Pin
Anonymous4-Nov-03 8:43
memberAnonymous4-Nov-03 8:43 

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Posted 5 Sep 2003


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