Bundle everything into one client portal URL
One URL per client: gallery + contract + invoice + shoot + orders.
From any workspace, open Portals. Generate a new portal token, attaching whichever of gallery / contract / invoice / shoot you want bundled. Share /portal/<token> with the client. The client does not need a Pictage account.
Opening the portal sets the signed gallery-access cookie used by /g/* (and clears it when the portal is revoked or expired). The portal is brand-applied and a single source of truth. Clients bookmark one URL instead of digging through email. Print and store orders from the same email in that workspace appear under Orders and open the signed /o tracking page.