When this feature is used, links to your site that Sailthru includes in your email campaigns are wrapped in a redirect URL beginning with link.
It provides statistics on clicks and shares, creates QR Codes automatically, enables Image Recognition (just upload images to link to your URL), it supports iBeacons, and you can specify mobile deep links, etc. You can also get a visual glimpse of your engagement for a different perspective.
The customizable part of the URL is case insensitive. Every access requires more requests (at least one more DNS lookup, though it may be cached, and one more HTTP/HTTPS request), thereby increasing latency, the time taken to access the page, and also the risk of failure, since the shortening service may become unavailable.
To request a subset of the above information, set the projection parameter to ANALYTICS_CLICKS or ANALYTICS_TOP_STRINGS. Yourls is a way to homebrew your own shortened links so that you don’t have to rely on that middleman. Bitly also offers a paid version, but it's pretty pricey.
To enable external link tracking, select Track External. (Optional) To specify the external links to track, in the External Filters box type all or part of the URL of the link target. Outbound links are the links which take visitors from your website to some other site on the web. The service imports all of your short URLs and stores them and will also take over your URL shortening domain if you decide to close it, ensuring links posted throughout the Internet continue to work.Below are some frequently asked questions about t.co, Twitter's link-shortening service. Twitter will use this to make your timeline better. In the Tracking Pixels menu, click on “Google Universa…” A new window will open. Further data will appear in the Behavior > Events pane after a few hours.This tactic was actually shown to me by Jeremiah Smith (my brother) over at SimpleTiger.