Thunderbird makes email better for you, bringing together speed, privacy and the latest technologies.
Mozilla Thunderbird is a free, open-source, and easy to use cross-platform email client application that helps you to customize the user experience, add people to your address book just in one-click, personalize email addresses, protect and secure your emails from phishing and more.
Features of Thunderbird Integration:
Manage emails, create contacts, and collaborate with customers from one convenient location.
Archive emails to Vtiger CRM.
Create leads right within the Thunderbird address book.
Import contacts from Vtiger into your Thunderbird address book and avoid duplication.