I am working with Drupal 7. In my site am using the SMTP Authentication Support module to send emails. After sending an email, I want to get the unique encrypted message ID string. Now I am getting the message ID as:
Example:
user_registrationpassword_register
for registrationuser_password_reset
for reset password.
How can I get the unique encrypted string for each email sending from the site?
user_registrationpassword_register
?