How to only display project related email in the module email section?

How to only display project related email in the module email section?

for example, i got 10 leads in the leads module, and try to assign all 10 leads to one sales person. 

All the email in module email section are the same, and come from the same email address, just want to know if we can sort the email by the project name or something else. so we won't be confused by the email from other project or leads.