VatStack - Simplify VAT & GST for your digital business.

EmailTracker.cc - Free Email Tracker for Gmail. Close More Deals with Comprehensive Email Tracking, Automated Follow-up Reminders, and Detailed Click Insights

vatlayer API - Free VAT Validation & EU VAT Rates API

Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

MFLicenseCenter.com - Connect to fuel tax licenses for tax determination, return preparation, and reporting compliance.

MailTime - Go through your email as fast and easy as text-messaging