Self-Hosted Ticketing & Email Integration

I need an open-source self-hosted ticketing system installed, configured, and ready for daily use integrated with emails (Microsoft Office 365) with following goals: 1. 1. Any new incoming email instantly opens a ticket... (Budget: $30 - $250 CAD, Jobs: Automation, HTML, Microsoft 365, Open Source, PHP, Scripting, Software Architecture, Website Design)