if you use the Mozilla Thunderbird mail tool the task is trivial. To paste a link into an email you you click "insert", then click "link" and a form opens. You then put whatever text you like into the first box and paste the full link into the second box. The text in first box appears in the text of the email, as a link (underlined etc) and the second box is the actual address that it links to. Easy Peasy.