English 
German Contact sales
Questions about purchasing, corporate offerings, or orders.
Technical support
Ticket support for technical questions about Proxmox products. Available for Basic, Standard, or Premium subscribers.
Proxmox Customer PortalCommunity support
General questions, how-to topics, and discussions with the community.
Proxmox Support ForumBilling, invoices & orders
Requests about billing, invoices, orders, and subscription changes.
Partners & resellers
Alliances, ISV partnerships, reseller inquiries, and partnership programs.
partner@proxmox.comReport a security bug
Found a security issue in a Proxmox product? Report it securely.
Security ReportingOther / special requests
For everything that doesn't fit the categories above, write to office@proxmox.com. Please do not use it for billing, invoices, orders, support tickets, partnerships, or press inquiries, those are handled much faster via the channels above.
Mail Address
Proxmox Server Solutions GmbH
Bräuhausgasse 37
1050 Vienna
Austria
CEO: Martin Maurer
VAT ID: ATU 61587900