Tracking URLs help you measure the effectiveness of your marketing campaigns. Use them when you're directing traffic to a page with the HubSpot tracking code from somewhere other than a call-to-action on your own site, like an email blast, PPC campaign, banner ad, and so forth. A tracking URL is a normal URL with parameters attached to it. When visitors come to your site from a tracking URL, HubSpot shows that traffic in the sources report.
Please note: a campaign name is required when creating tracking a URL because the campaign name is used in several reports in HubSpot. Visits to the tracking URL will be attributed to this campaign in the sources report and will count towards the analytics for the campaign in the campaigns tool.
Please note: due to recent changes in AdWords ads, if you're using HubSpot tracking URLs in Google AdWords ads, please be sure to use the full link, not the shortened link. Insert the full link into the HubSpot Full Tracking URL into the Final destination field in AdWords ads. The Final destination field must contain the same domain as the landing page URL. For example, if your ad's landing page is http://offers.yoursite.com/demo the Final destination field must contain yoursite.com.