Automated email open tracking pixel is not recognised by gmail

[julienbedard]

Hi, recently found out Mautic as a serious flaw in the way that automated pixel is generated.

In the file "app/bundles/EmailBundle/Helper/MailHelper.php" line 879

$trackingImg = '<img style="display: none;" height="1" width="1" src="{tracking_pixel}" alt="Mautic is open source marketing automation" />';

Mautic email helper append style="display: none;" to the tracking pixel, that lead gmail not showing and rendering the pixel to the user. Since tracking openers is an important feature and gmail is a major email service provider we should remove style="display: none;" to the MailHelper.php file.

Another workaround would be to change style="display: none;" to style="display:none !important;" which is recognised by gmail. I did not tested out other major email service providers like yahoo, outlook or aol. But the removal is the best option imho.

[julienbedard]

Just realised that I did posted the issue at the wrong place... Closing