It can be easily achieved by overriding create and  write functions. for Example,

def create(self, cr, uid, vals, context=None):
    if vals.get('name') and vals.get('email'):
        vals.update({'email': vals.get('name') + ' <' + vals.get('email') + '>'})
    return super(class_name, self).create(cr, uid, vals, context)

and write method

def write(self, cr, uid, ids, vals, context=None):
    for rec in self.browse(cr, uid, ids, context):
        if vals.get('name') or vals.get('email'):
            vals.update({'email': vals.get('name') or rec.name + ' <' + vals.get('email') or rec.email + '>'})
    return super(class_name, self).write(cr, uid, ids, vals, context)

Hope this helps.

Use Python Regular expressions and String Split Method ,

Emails Example

Suppose you want to find the email address inside the string 'xyz alice-b@google.com purple monkey'. We'll use this as a running example to demonstrate more regular expression features. Here's an attempt using the pattern r'\w+@\w+':

  str = 'purple alice-b@google.com monkey dishwasher'   match = re.search(r'\w+@\w+', str)   if match:     print match.group()  ## 'b@google'

The search does not get the whole email address in this case because the \w does not match the '-' or '.' in the address. We'll fix this using the regular expression features below.