Microsoft Outlook 2013 automatically makes clickable links out of any URLs, or Web addresses, that you include within the body of an email. To prevent lengthy URLs from messing up your email message, use Outlook’s hyperlink feature to anchor them to any words of your choice.
Highlight the portion of text and then click the Insert tab. On the Links group, select Hyperlink to open the Create Hyperlink wizard.
Insert the URL into the vacant box next to Address. For example, add http://www.microsoft.com to link the text to the Microsoft home page. To link an email address to the text, type mailto: followed by the email address.
Click OK to create the link and exit the Create Hyperlink wizard.