$Linkimg Viewed$
This command will insert an image in the HTML portion of the message. When the email is opened and the images are displayed, this action is tracked by iService and provides a reliable indication that the message has been viewed. However, if the user does not accept the images or reads the text version of the message, this attribute will not be updated.
The Linkimg command generates an image tag that looks like the following.
<img src="https://1to1service.iServiceCRM.com/Link.aspx?id=3&contact=16&value=&hash=F0A16B" alt="" />.
The link page redirects to a standard blank gif image stored on the iService website.
NOTE: for the Linkimg Viewed tag to work properly, the iService website URL must be externally accessible.