Need to create custom alerts in SAP PI 7.4 single stack

Dear Experts,

Currently we have been migrated to SAP PI7.4 (single stack) from SAP 7.1(dual stack).

In SAP PI7.1 we have custom alerts created with custom email subject and body using Transaction Code 'ALRTCATDEF'.

Same way we need to achieve this in SAP PI7.4.

We have used alert rule with standard consumer 'ALERT-TO-MAIL' in ID, it gives too much information in alert mails and we need to customize these alert notifications.

We have created Alert Rule with custom consumer in Integration Directory of SAP-PI 7.4 but unable to change email subject and body details. 

Please let me know is there any way to achieve this in SAP PI7.4 (Single Stack) and how?

I have referred below links.

http://scn.sap.com/thread/3209979

http://scn.sap.com/community/pi-and-soa-middleware/blog/2012/05/05/michals-pi-tips-component-based-message-alerting--api

Thanks & Regards,

Nitesh Valecha