# model
email = models.EmailField(max_length=75, blank=True)

def emailname(self):
    email = self.email.rpartition('@')
    return email[0]

def emailserver(self):
    emailserver = self.email.rpartition('@') 
    return emailserver[2]
    
# template
{% if object.email %}
<script type="text/javascript">
  emailname = "{{ object.emailname }}";  		
  emailserver = "{{ object.emailserver }}";  		
  document.write("<a href=\'mailto:" + emailname + "@" + emailserver + "\'>" + emailname + "@" + emailserver + "</a>");
</script>
{% endif %}

# browser
name@server.com