sending username and password through email after user registration in web application

Question

What is your opinion on sending the username and password to their email address when they register on our website..this way if they forget the password in the future, they

Answer 1

My rule of thumb would be - if you're OK writing it on a postcard and sending it through the mail, then it's OK for standard Email. I don't think income information would fall in that category for most people.

As for passwords, if they can't remember them in the first place, they won't be able to find the Email you sent them with the password in it, and it's an admission of storing it in the clear. I would avoid it and give them the means to reset - they will need that anyway.