What InvisibleCRM Support Team Guru say:
Do it with SalesDesktop
SalesDesktop supports two ways of tracking: manual and automatic.
Manual means you select the item to link your mail by hands, while automatic means the SalesDesktop will connect your mails to the contacts automatically.
How does it work?
It works in a very simple way.
When SalesDesktop processes your incoming or outgoing mails, it first of all parses the recipients’ list.
There are contacts in the TO:, CC:, BCC: and FROM: mail fields. If there are Contacts or Leads that match the email addresses that are shared with Salesforce.com, then SalesDesktop will first check the status of the Contact’s “Save correspondence to the Salesforce.com” checkbox (screenshot #1).
If this box is checked, SalesDesktop will automatically create a completed task record with the body pre-filled by processing the mail text. This task will be linked to a Contact that matches the email address. If the mail contains attachments, they will also be linked to the same Contact. After the next synchronization, all records (task and documents) will be moved to your Salesforce.com account.
You also have the possibility to link your mails to other types of records such as Account, Lead and Opportunity. To do this, you need to use the manual mail processing.
Once you select a letter in your mail list (this could be a different list from Inbox), click on the “Save Mail” button. SalesDesktop will parse emails from your mail and propose a list of Contacts and Leads as well as Accounts and Opportunities referred to by Contacts (screenshot #2).
You can link your mails to several Salesforce.com records by using the “Save Mail” button several times.
Attached Screnshots: