Marketing is all about driving knowledge of your product or service and bringing your sales people great leads! In order to do that, you need to have an understanding of where your website visitors are coming from and which website visitors actually turn into the best leads. If you're sending lots of emails, wouldn't you want to know which ones are actually effective? Tracking URLs help you see what's working and what isn't so you can work smarter!
Tracking URLs in emails can help you increase the efficacy of your emails. You can easily run tests, try different language, show different offers, and see exactly which offers and language resonated with your audience. The great thing about that is you can then use the best messaging moving forward, rather than sending email willy-nilly. This saves you time, since you'll get more click throughs faster!