

Extension allows you to mention any vTiger’s user in the comments. So that this user will receive an email stating that he is mentioned with reference to the vTiger’s record. It is possible to integrate with the VDNotifier module, which will allow other users to receive instant alerts in the vTiger that they mentioned in the comments indicating the entry.
https://vordoom.com/vtiger-blog/54_vordoom-mantion-and-notifier-pro-integration.html
As an example we have installed VorDOOM Mention 2.0 extension into our vTiger CRM demo.
login: demo
password: demo
https://vordoom.com/vtiger-blog/55_vordoom-mention-20-for-vtiger-crm-7x.html