Esna enhances communication and collaboration through integration with Google Apps, enabling real-time presence and contextual collaboration within Google Drive. Users can easily route calls based on Google Calendar availability, send faxes from Gmail, and utilize OAuth 2.0 for secure sign-ins. Additionally, Esna provides seamless scheduling and escalation of Webex and Scopia meetings directly from Google Apps, improving productivity for over 10,000 customers across various sectors.