PayPal button shortcode to hyperlink URL

I am using a plugin that creates a paypal button for me (I do not create it via paypal). The plugin then supplies me with a shortcode for linking to the paypal payment page.

But here is what I need to do: I need for the code to be turned into a URL/hyperlink… or at least, I would like to be able to put this same link into an email.

I am able to inspect the element, of course, and see the html code that directs the visitor to the paypal site, but how can I make that an actual URL?

Here is the code with some items blacked out:

<form method="post" action="https://www.sandbox.paypal.com/cgi-bin/webscr">

    <input type="hidden" value="_xclick-subscriptions" name="cmd"></input>
    <input type="hidden" value="utf-8" name="charset"></input>
    <input type="hidden" value="TipsandTricks_SP" name="bn"></input>
    <input type="hidden" value="[email protected]" name="business"></input>
    <input type="hidden" value="USD" name="currency_code"></input>
    <input type="hidden" value="233" name="item_number"></input>
    <input type="hidden" value="Subscribe Now-test" name="item_name"></input>
    <input type="hidden" value="1" name="a3"></input>
    <input type="hidden" value="1" name="p3"></input>
    <input type="hidden" value="D" name="t3"></input>
    <input type="hidden" value="1" name="src"></input>
    <input type="hidden" value="1" name="no_shipping"></input>
    <input type="hidden" value="https://xxxxxxxx.com/?swpm_process_ipn=1" name="notify_url"></input>
    <input type="hidden" value="https://xxxxxxxx.com/test-sign-up/" name="return"></input>
    <input type="hidden" value="https://xxxxxxxx.com" name="cancel_return"></input>
    <input type="hidden" value="subsc_ref=3&user_ip=216.xx.xxx.142" name="custom"></input>
    <input class="swpm-subscription-button-submit" type="image" alt="Subscribe Now" src="https://xxxxxxxx.com/wp-content/uploads/2015/07/ancestral-check-out-button.png"></input>

</form>