Proxmox Mail Gateway Standard

+ Access to Enterprise Repository
+ Stable software updates
+ Support via customer portal
+ 15 support tickets
+ Response time 4 hours within a business day (on critical support requests)
+ Remote support (via SSH)

Subscription period is one year from purchase date.
Each Proxmox Mail Gateway needs a subscription.

All details here

You can read about this and other PROXMOX products here

Contents of delivery:
✔ distribution Proxmox Mail Gateway (media or download link from the Internet)
✔ subscription key (in electronic form)
✔ subscription key (on paper form)