Most of the time while sending the email to more than one user/email address SugarCRM sends the same email many times to the same user or sometimes it does not send the email to the other users/email addresses.

I noticed that SugarCRM reads semicolon(;) to differentiate the email addresses instead of comma(,).

We may expect the fix in 4.5.0e release that Sugar automatically changes comma into semicolon.