Email Notification not going out

Email Notification not going out

Hi,

I created Zoho project and added few users to my project (with their valid email id). But there is no email notifications that has gone to their email address. Now they are not able to 'Sign In' or register (as their email id already exists). Could you please let me know how to reset their password?

Also, i observed that there is no email notification that's going out for new task assignment or any notification from Zoho ? Could you please let me know if I am missing something..

Regards,
Arun.