If you want to send a bulk email to a specific group of customers, first select the accounts.

1. Go to the  Home tab in your function bar, then select  Accounts and click on  Search >  Accounts.
2. Select your target group on the basis of categories, keywords, postcodes etc. and click on  Search (Searching for accounts)
3. A list of all accounts matching the search criteria will open.
4. Right-click to open the context menu to further refine the list by using filters, if required.