Bug 412207

Summary:	kmail should have the option to block email tracking images
Product:	[Applications] kmail2	Reporter:	James Th <james>
Component:	general	Assignee:	kdepim bugs <pim-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	jjm
Priority:	NOR
Version First Reported In:	5.12.1
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description James Th 2019-09-22 17:36:21 UTC

SUMMARY
it's possible for me to switch on 'do not download external images' in the global settings for when i open an email, but often this leads to poorly rendered emails.  I would like to be able to download external images within an email but to specifically have email tracking images not downloaded/activated.  This will mean that when/where I open an email is not noted by the 3rd party, whilst I am still able to read correctly formatted emails. The do not track functionality should ideally be enabled by default.

Is my request even possible?! Perhaps by only downloading images larger than 4-5 pixels - just a guess!

STEPS TO REPRODUCE
1. it's currently standard functionality.

OBSERVED RESULT
all images including the 1px tracking image is downloaded.   

EXPECTED RESULT
All images are downloaded except if the image size is less than e.g. 4/5 pixels.

SOFTWARE/OS VERSIONS 
Linux/KDE Plasma: OpenSUSE TW (latest)
(available in About System)
KDE Plasma Version: 5.16.5
KDE Frameworks Version: 5.61.0
Qt Version: 5.13.1

ADDITIONAL INFORMATION

Comment 1 Jonathan Marten 2019-09-22 18:38:10 UTC

Unlikely to be possible to implement - it is not possible to know the size of an image without downloading it.  The HTML tag for a rendered image should have width and height attributes, but a hostile email sender could simply omit them for a tracking image.