By default Reignite will add the following tracking strings to all click-thru’s allowing you to track those arriving from live email content in Google Analytics and other tracking tools:
utm_campaign: {{ImageName}} (This will replace the placeholder with the image name)
utm_content: reignite
utm_medium: email
utm_source: reignite
custom: If anything is listed here it will be added to the URL. You need to specify the name of the query string and the value. E.G. mytag=123
You can update these defaults in your account settings page:
Customise on Image tags page
If in any image you wish to override these settings you can do on the tags page. Initially you will see the default values but you can amend these, including adding any custom merge tags from the data source.