<div class="targetclass">
    <tr>
       <td><a href="retrieve@email.com">emailval2</a></td>
       <td><a href="target@email.com">emailval</a></td>
    </tr>
</div>

with open('jquery-3.2.1.min.js', 'r') as jquery_js:
    jquery = jquery_js.read() #read the jquery from a file
    driver.execute_script(jquery) # activate the jquery lib
    driver.execute_script("$('div.targetclass a[href$="target@email.com"]').parents("tr").find("a:first").attr('href')")

aurlval = driver.execute_script("$('div.targetclass a[href$="target@email.com"]').parents("tr").find("a:first").attr('href')")
print (aurlval)

None

div = driver.find_element_by_class_name("targetclass")
targeta = div.find_element_by_link_text("target@email.com")
tr = targeta.parent.parent
retrieve = tr.find_element_by_tag_name("a")
aurlval = retrieve.getattribute("href")

div = driver.find_element_by_class_name("targetclass")
targeta = div.find_element_by_link_text("target@email.com")
tr = self.driver.execute_script("return arguments[0].parentNode.parentNode;", targeta)