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.
To edit or remove hyperlinks in Outlook 2013, highlight and right-click any hyperlinked text and then select “Modify Hyperlink” or “Remove Hyperlink."
To hyperlink pictures in Outlook 2013, right-click a picture and then select "Hyperlink." Insert a URL into the address field and then click "OK."
To create a hyperlink in Windows Mail, highlight the text or URL and then select the chain-shaped “Hyperlink” button. Insert the URL into the "Address" field and the text into the "Text to be Displayed" field, then click “Insert Link.”
To create a hyperlink in Gmail, press “Ctrl-K" after highlighting the text or URL. Insert the URL into the “Web Address" field and the text into "Text to Display," field and then click “OK.”
To create a hyperlink in Outlook.com, highlight the required text and then press “Ctrl-K” to open the Hyperlink pop-up box. Insert the URL and click "OK" to create the hyperlink. Outlook.com's hyperlink feature doesn't allow you to highlight URLs and replace them with text.
Embedded hyperlinks are only visible to recipients whose email clients use HTML or rich text formats to display messages.