You will have to build an? gmail/google apps contextual gadgets, here is? doc from google ..? [login to view URL] # install
To build a plugin for google apps to create a bridge between our CRM and Google apps ..?
It should need is 2 things:
1. Login to the CRM?
2. When you are on an email fetch contact info (CRM mini data card) of person / company from the CRM system and give people the opportunity to write message to this mail and save this email in the CRM.
The CRM is asp.net vb and there will be the webservice you need for data stream.
You may also help width publish this? gmail contextual gadgets an the google markedspalce.