With this extension You can create unlimited count of nicer and more sophisticated email templates for almost all vtiger modules. You can send mass emails from listviews (e.g. Invoices, Quotes, Products, etc.). Sending is running in background and you are informed about sending process by small popup window.
Also good point is
Email Campaigns. You can use it to send plenty of emails to your clients.
Make your bussines known with Email Campaigns.
You can test Email Maker or all our extensions in vtiger CRM DEMO before you Buy.
Demo vtiger CRM 6.x
Read more about Email Maker
Manual for Email Maker 6.x