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Posted 13 May 2004


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Email Tracker

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3.79/5 (19 votes)
13 May 20041 min read
Track the emails you sent to people and you'll get alerted when somebody opens the email. Are spammers using this kind of tracking?


Sample image

I was interested to see how spammers are tacking emails and I thought to create something like that .This little project shows you how to track emails you sent by adding a little track quote at the end. I also create it a program to remove this kind of tracking and flag the email as SPAM.

Using the code

There is only one function to use: AddTracking(string sBody, string sEmail, string sDomain)

private string AddTracking(string sBody, string sEmail, string sDomain)
   string sRet = sBody + "<IMG height=1 src=\&quot;http://www." + 
                 sDomain + "/emailtrack.aspx?emailsent=" + sEmail + 
                 "\" width=1>";
   return (sRet); 

This function will add a LINK IMG at the end of the email that when loaded will actually be an ASPX page, that will alert you. Outlook and any mail editor that loads images will call the emailtrack.aspx with the parameter you added in the email. This is an error in the code above, I took the character '<' out so will display in this article.

Actually because I am addid HTML in the code, is difficult to see, I don't know how to make sure the article shows that code without adding weird formats

The Tracking page is pretty simple when receives the request:

if ( Page.IsPostBack == false )
    if ( Request.Params["emailsent"] != null )


So when the email editor (Outlook, Netscape) makes the request, the answer will be a transparent image, so won't show on the email.

You need to make sure you send an HTML email. The demo project uses the Mail namespace from .NET. On that class you must set

mailMsg.BodyFormat = MailFormat.Html;


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.

A list of licenses authors might use can be found here


About the Author

Albert Pascual
Web Developer
United States United States
Al is just another Software Engineer working in C++, ASp.NET and C#. Enjoys snowboarding in Big Bear, and wait patiently for his daughters to be old enough to write code and snowboard.

Al is a Microsoft ASP.NET MVP


Comments and Discussions

Questiongetting the cookies Pin
Member 1383010711-Jul-19 6:56
MemberMember 1383010711-Jul-19 6:56 
Questiongetting IP address Pin
Member 1383010711-Jul-19 6:16
MemberMember 1383010711-Jul-19 6:16 
GeneralEmail Tracking Complete code Pin
NaniCh10-Jan-13 22:22
MemberNaniCh10-Jan-13 22:22 
GeneralMy vote of 5 Pin
160419844-Apr-12 20:38
Member160419844-Apr-12 20:38 
QuestionEmail Tracker Pin
160419844-Apr-12 19:39
Member160419844-Apr-12 19:39 
Questionhey,i didnt got it bro... :( Pin
Shubhamraj1-Oct-11 20:05
MemberShubhamraj1-Oct-11 20:05 
Generaleffort tracking system code in ASP.NET with c# Pin
Sriamar7-Apr-08 19:10
MemberSriamar7-Apr-08 19:10 
QuestionE mail tracker source code Pin
prasadtalla9-May-07 1:46
Memberprasadtalla9-May-07 1:46 
QuestionCaught by mail scanner Pin
Nirav K Sarvaiya16-Nov-05 3:20
MemberNirav K Sarvaiya16-Nov-05 3:20 
AnswerRe: Caught by mail scanner Pin
Albert Pascual16-Nov-05 4:51
sitebuilderAlbert Pascual16-Nov-05 4:51 
QuestionRe: Caught by mail scanner Pin
Nirav K Sarvaiya16-Nov-05 5:14
MemberNirav K Sarvaiya16-Nov-05 5:14 
GeneralThe other way around Pin
Anonymous30-Sep-05 2:40
MemberAnonymous30-Sep-05 2:40 
GeneralEmail tracking is not so easy Pin
inanc_gumus20-May-04 1:02
sussinanc_gumus20-May-04 1:02 
GeneralRe: Email tracking is not so easy Pin
martininick10-Jun-04 10:55
Membermartininick10-Jun-04 10:55 
GeneralRe: Email tracking is not so easy Pin
EEmadzadeh29-Jul-05 17:49
MemberEEmadzadeh29-Jul-05 17:49 
GeneralRe: Email tracking is not so easy Pin
Wcohen6-Sep-05 17:03
MemberWcohen6-Sep-05 17:03 
Generalwow.. Pin
MorningZ19-May-04 3:22
MemberMorningZ19-May-04 3:22 
GeneralRe: wow.. Pin
AORD19-May-04 20:15
MemberAORD19-May-04 20:15 
GeneralRe: wow.. Pin
MorningZ20-May-04 3:32
MemberMorningZ20-May-04 3:32 
GeneralRe: wow.. Pin
Albert Pascual20-May-04 5:57
sitebuilderAlbert Pascual20-May-04 5:57 
GeneralRe: wow.. Pin
AORD20-May-04 14:52
MemberAORD20-May-04 14:52 
GeneralRe: wow.. Pin
pvialoux23-May-04 23:09
Memberpvialoux23-May-04 23:09 
GeneralSource Code Pin
Tony Bermudez17-May-04 7:51
MemberTony Bermudez17-May-04 7:51 
GeneralRe: Source Code Pin
Albert Pascual17-May-04 7:53
sitebuilderAlbert Pascual17-May-04 7:53 
GeneralRe: Source Code Pin
Rogerio P22-May-04 11:38
MemberRogerio P22-May-04 11:38 

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