title: It's regarding AWS Cognito email customization?
body: <p>In Cognito I have created the user name with an unique id for example (dbdhdydhdhhdh) and I am putting my email address to get the temp password to log in my UI ? 
  But when I receive an email it's shows my unique id instead of name. So I trigger the lambda function to get my name in the email .My lambda is working fine and it's shows my user name when I get the password but along with the username the unique id is also reflecting. </p>
  
  <p>Any suggestion how can I hide that unique id please ? </p>