[Koha] check out time emails

Hi All, Are there any settings for email notifications at check in / check out / suggestions management time other than the settings that we do for every patron category?? I am trying to send emails from my KOHA at circulations time but no email is being sent but I am able to send and receive email from serial claim module. Can anyone help What might be reason for this issue?? Kind regards, Hira Akram