A brief description appears below:

Avoid Sending Passwords in Clear TextWhen you have new people create a profile on your Joomla site, it is a security concern for them (plus it may just bug them) if you include their password in clear text in the welcome email you send them. It is better to not send them the password. After all, they've just chosen it anyway.  How to turn off sending Joomla passwords in welcome emails is the subject of today's Maintenance Monday.