Does a lens with a bigger max. aperture focus faster than a lens with a smaller max. aperture?

A quine of sorts

What verb for taking advantage fits in "I don't want to ________ on the friendship"?

Do home values typically rise and fall consistently across different price ranges?

List Manipulation : a,b,c,d,e,f,g,h into a,b,c,d,e,f,g,h

What election rules and voting rights are guaranteed by the US Constitution?

Checkmate in 1 on a Tangled Board

How can I deal with extreme temperatures in a hotel room?

The Lucas argument vs the theorem-provers--who wins and why?

Can European countries bypass the EU and make their own individual trade deal with the U.S.?

Avoiding repetition when using the "snprintf idiom" to write text

Why doesn't SpaceX land boosters in Africa?

Why wasn't EBCDIC designed with contiguous alphanumeric characters?

How far can gerrymandering go?

pgfmath does not work

Copy group of files (Filename*) to backup (Filename*.bak)

Subset of knight's move in chess.

Making a wall made from glass bricks

My colleague is constantly blaming me for his errors

Sharing referee/AE report online to point out a grievous error in refereeing

Is it okay to fade a human face just to create some space to place important content over it?

How do I create a new column in a dataframe from an existing column using conditions?

How to securely dispose of a smartphone?

Bin Packing with Relational Penalization

Undetectable mail tracker

How mail tracking works?My email isn't getting deliveredEffectively switching email accounts (Yahoo Mail to Gmail)Gmail DMARC Validation is Trashing Contact Form Messages from Yahoo and AOL Email AccountsCan't see unread emails in some inboxes in thunderbird (osx mavericks)?Registrars who forward email without filtering?How to preserve an authentic copy of business/work emails as a form of evidence?What diagnosis steps can I do if my emails send, but are not received, not even as spam?Getting Bombarded By EmailsSending an email to multiple addressees as “BCC” and making sure they do not see “undisclosed recipients”

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

2

1

As far as I have searched, there are many third-party email tracking systems; and many of them are in the form of add-ons for gmail.

I have tested two of them, and they work fine when the recipients are using gmail or yahoo web clients. But when they use windows clients, such as Outlook or Thunderbird, a warning message is shown that a "remote content is blocked", and as a result, no delivery report is sent. They can open the emails without any notifications.

Is there a way to track emails undetectably, so no one can detect that emails are being tracked?

I should mention that I am only concerned about the mail being read, not gathering data.

email tracking

share|improve this question

edited 9 hours ago

DavidPostill♦

111k2727 gold badges244244 silver badges279279 bronze badges

asked 9 hours ago

Sd HosseiniSd Hosseini

11333 bronze badges

New contributor

Sd Hosseini is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  If there was one, don't you think Microsoft or Mozilla would have blocked it?
  
  – user20574
  36 mins ago
  

  
  
  
  

add a comment | 

2

1

As far as I have searched, there are many third-party email tracking systems; and many of them are in the form of add-ons for gmail.

I have tested two of them, and they work fine when the recipients are using gmail or yahoo web clients. But when they use windows clients, such as Outlook or Thunderbird, a warning message is shown that a "remote content is blocked", and as a result, no delivery report is sent. They can open the emails without any notifications.

Is there a way to track emails undetectably, so no one can detect that emails are being tracked?

I should mention that I am only concerned about the mail being read, not gathering data.

email tracking

share|improve this question

edited 9 hours ago

DavidPostill♦

111k2727 gold badges244244 silver badges279279 bronze badges

asked 9 hours ago

Sd HosseiniSd Hosseini

11333 bronze badges

New contributor

Sd Hosseini is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  If there was one, don't you think Microsoft or Mozilla would have blocked it?
  
  – user20574
  36 mins ago
  

  
  
  
  

add a comment | 

As far as I have searched, there are many third-party email tracking systems; and many of them are in the form of add-ons for gmail.

I have tested two of them, and they work fine when the recipients are using gmail or yahoo web clients. But when they use windows clients, such as Outlook or Thunderbird, a warning message is shown that a "remote content is blocked", and as a result, no delivery report is sent. They can open the emails without any notifications.

Is there a way to track emails undetectably, so no one can detect that emails are being tracked?

I should mention that I am only concerned about the mail being read, not gathering data.

email tracking

share|improve this question

edited 9 hours ago

DavidPostill♦

111k2727 gold badges244244 silver badges279279 bronze badges

asked 9 hours ago

Sd HosseiniSd Hosseini

11333 bronze badges

New contributor

Sd Hosseini is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 9 hours ago

DavidPostill♦

111k2727 gold badges244244 silver badges279279 bronze badges

asked 9 hours ago

Sd HosseiniSd Hosseini

11333 bronze badges

New contributor

Sd Hosseini is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 9 hours ago

DavidPostill♦

111k2727 gold badges244244 silver badges279279 bronze badges

asked 9 hours ago

Sd HosseiniSd Hosseini

11333 bronze badges

New contributor

Sd Hosseini is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 9 hours ago

DavidPostill♦

111k2727 gold badges244244 silver badges279279 bronze badges

edited 9 hours ago

DavidPostill♦

111k2727 gold badges244244 silver badges279279 bronze badges

asked 9 hours ago

Sd HosseiniSd Hosseini

11333 bronze badges

New contributor

Sd Hosseini is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 9 hours ago

Sd HosseiniSd Hosseini

11333 bronze badges

1 Answer
1

active

oldest

votes

9

Is there a way to track emails, so no one can detect that emails are being tracked?

No.

If email is tracked it must communicate that information somewhere and therefore must leave a footprint of some kind.

You can use such tricks as a unique image (i.e. the image is only in the email to one sender ever) and watching the web server to see if the image is accessed, but this will only work if the user loads the images in email, which doesn't always happen, which you've experienced with thunderbird.
How much content is loaded is decided by a users settings and so isn't something you can control.

Some companies will provide a link in an email 'can't read this email? click here to view online' which is basically the same thing, but instead of a image online they present the entire emails content again, under the guise of 'helping you' when in fact it's all about tracking you.

share|improve this answer

edited 8 hours ago

answered 9 hours ago

DavidPostill♦DavidPostill

111k2727 gold badges244244 silver badges279279 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Should be noted that image access is definitely not an indicator of read status, because some email clients (including the rather popular Gmail webapp!) will download images before emails are opened. Sometimes, without the user ever logging in or maybe even existing (for caching/antispam/antivirus purposes).
  
  – Bob
  49 mins ago
  
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "3"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

Sd Hosseini is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f1453771%2fundetectable-mail-tracker%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

9

Is there a way to track emails, so no one can detect that emails are being tracked?

No.

If email is tracked it must communicate that information somewhere and therefore must leave a footprint of some kind.

You can use such tricks as a unique image (i.e. the image is only in the email to one sender ever) and watching the web server to see if the image is accessed, but this will only work if the user loads the images in email, which doesn't always happen, which you've experienced with thunderbird.
How much content is loaded is decided by a users settings and so isn't something you can control.

Some companies will provide a link in an email 'can't read this email? click here to view online' which is basically the same thing, but instead of a image online they present the entire emails content again, under the guise of 'helping you' when in fact it's all about tracking you.

share|improve this answer

edited 8 hours ago

answered 9 hours ago

DavidPostill♦DavidPostill

111k2727 gold badges244244 silver badges279279 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Should be noted that image access is definitely not an indicator of read status, because some email clients (including the rather popular Gmail webapp!) will download images before emails are opened. Sometimes, without the user ever logging in or maybe even existing (for caching/antispam/antivirus purposes).
  
  – Bob
  49 mins ago
  
  

  
  
  
  

add a comment | 

9

Is there a way to track emails, so no one can detect that emails are being tracked?

No.

If email is tracked it must communicate that information somewhere and therefore must leave a footprint of some kind.

You can use such tricks as a unique image (i.e. the image is only in the email to one sender ever) and watching the web server to see if the image is accessed, but this will only work if the user loads the images in email, which doesn't always happen, which you've experienced with thunderbird.
How much content is loaded is decided by a users settings and so isn't something you can control.

Some companies will provide a link in an email 'can't read this email? click here to view online' which is basically the same thing, but instead of a image online they present the entire emails content again, under the guise of 'helping you' when in fact it's all about tracking you.

share|improve this answer

edited 8 hours ago

answered 9 hours ago

DavidPostill♦DavidPostill

111k2727 gold badges244244 silver badges279279 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Should be noted that image access is definitely not an indicator of read status, because some email clients (including the rather popular Gmail webapp!) will download images before emails are opened. Sometimes, without the user ever logging in or maybe even existing (for caching/antispam/antivirus purposes).
  
  – Bob
  49 mins ago
  
  

  
  
  
  

add a comment | 

Is there a way to track emails, so no one can detect that emails are being tracked?

No.

If email is tracked it must communicate that information somewhere and therefore must leave a footprint of some kind.

You can use such tricks as a unique image (i.e. the image is only in the email to one sender ever) and watching the web server to see if the image is accessed, but this will only work if the user loads the images in email, which doesn't always happen, which you've experienced with thunderbird.
How much content is loaded is decided by a users settings and so isn't something you can control.

Some companies will provide a link in an email 'can't read this email? click here to view online' which is basically the same thing, but instead of a image online they present the entire emails content again, under the guise of 'helping you' when in fact it's all about tracking you.

share|improve this answer

edited 8 hours ago

answered 9 hours ago

DavidPostill♦DavidPostill

111k2727 gold badges244244 silver badges279279 bronze badges

share|improve this answer

edited 8 hours ago

answered 9 hours ago

DavidPostill♦DavidPostill

111k2727 gold badges244244 silver badges279279 bronze badges

answered 9 hours ago

DavidPostill♦DavidPostill

111k2727 gold badges244244 silver badges279279 bronze badges

answered 9 hours ago

DavidPostill♦DavidPostill

111k2727 gold badges244244 silver badges279279 bronze badges