This App is for Event Rental Systems Users who wish to connect their email accounts to the Event Rental Systems CRM. Once the App…This App is for Event Rental Systems Users who wish to connect their email accounts to the Event Rental Systems CRM. Once the App is installed and running ERS will be able to read emails from the selected customers through the connector. Please note that this App is for Event Rental Systems customers with CRM access enabled on their account. If you are an ERS user and would like to enable your CRM please reach out to ERS Support.