Dear Pipedrive Team, 

when I checked the spamcore of one of my mails I realized the tracking pixel is inserted into the mail without an alternative text attribute as you can see the error message from

Therefore I would be nice to add that empty ' alt="" ' attribute to the img tag of the tracking pixel. That's not a major change and also is not possibly breaking anything else. But it would help with the spamrecord of every mail that is sent and tracked with Pipedrive. 

Thank you in advance!