Email after setting up the password

You can customize the email users get once they register.

Take a look at this link:
https://www.wpbeginner.com/plugins/how-to-send-a-custom-welcome-email-to-new-users-in-wordpress/

There’s also a function to send an activation link:
https://codex.www.ads-software.com/Function_Reference/wp_new_user_notification

Maybe a combination of both?

I did that already, what i want to do is i need to send another mail after setting up the password including the username and password in the mail.

I don’t know anyway to do this, since the password gets encrypted in the database once the user changes it.

It’s not really safe to send real passwords over email. If it’s just a temporary password then it’s okay because the user will change it.

I was able to find an old plugin that seems to work, but again, it resets the password and re-sends the welcome email:
https://www.ads-software.com/support/view/plugin-reviews/re-send-welcome-email