Whilst scheduling a report in Jaspersoft to send to a set of email recipients, Jaspersoft limits the input characters in the email recipient text box to 100, which means users can only add 3-4 email addresses. 
 

It is possible to modify the file SchedulerController.js within Jaspersoft 6.2.1 however, in Jaspersoft 6.4.2 we cannot find the file to modify. 

Could you please provide a workaround for the new Jaspersoft 6.4.2?

Release:
Component: PPMJSP

The File SchedulerController.js does not exist on 6.4.2 in that location. It only exists on Jaspersoft 6.2.1. The file in the same location on Jaspersoft 6.4.2 is called SchedulerMain.js this is where you will need to edit this file to modify the parameter.

For Japsersoft 7.1 see - https://ca-broadcomcsm.wolkenservicedesk.com/wolken/esd/knowledgebase_search?articleId=140334