Custom mail tracking via X-NZ-Track header

Some of our users requested more flexibility when choosing how they want their emails to be tracked.

We have implemented the mail header X-NZ-Track which can take any of the following options separated by comma:

• open – enable email open tracking by adding the pixel image
• click – enable tracking of links in both html and plain text version
• txt_click – enable tracking of links just in the plain text version
• html_click – enable tracking of links just in the html version

If the header is used it overrides acount settings.

Examples:

X-NZ-Track: open,click
// tracks both open and click in html and plain text version

X-NZ-Track: txt_click
// tracks just click in plain text version