How to create a client portal: the five promises, and three ways to build

Your brand. Pro uses a branded Docsiv subdomain, while Agency can use a verified custom domain, so the portal can look like your firm on the plan that supports each path.

Judge any approach, including ours, against those five.

Option one: assemble it from general tools

A shared Drive folder, a Notion workspace, or a SharePoint site, plus discipline. This is the free option and it can work for simple relationships. The costs are structural: the brand is the file host's, versioning is a naming convention, approvals are comments someone has to find later, signing happens in yet another tool, and permissions are one careless share away from a problem. You are not building a portal so much as impersonating one, and the impersonation takes ongoing labor.

Option two: build it custom

A real option if client experience is your product and you have engineers on staff. You get exactly what you want. You also inherit authentication, permissions, uploads, notifications, e-signature compliance, and mobile rendering as a permanent side project. For most agencies the honest math is months of build time to reach the baseline a product gives you on day one, and the maintenance never ends. Build custom when the portal is your differentiator, not your utility.

Option three: use a portal platform

Purpose-built portal software gets you the login, the branding, and the organization in a day. The differences hide one level down, and the biggest one is this: does the platform host files, or does it host documents?

A file-hosting portal is a tidy shell around uploads. The work still gets made in five other tools, exported, and placed. A document-native portal is where the work itself lives: proposals, contracts, reports, and invoices created in the platform, delivered with a current version, approved and signed in place, with engagement signals flowing back to you. The first kind organizes your output. The second kind replaces the stack that produces it.

The setup, whichever you choose

On Agency, connect a verified custom domain such as portal.youragency.com; Pro uses a branded Docsiv subdomain. The right setup depends on the plan and domain configuration. Load your brand kit before the first client sees it. Create one space per client and group work by project. Decide the statuses a document moves through and make them visible. Migrate the active engagements only; dead archives can stay where they are. Then send each client one link and tell them everything now lives there, because a portal nobody is directed to is a folder with a login.

A short test

Two weeks after launch, count the "can you resend that" and "which version is this" messages. If they have stopped, the portal is working. If they have not, clients are still living in their inbox, and the portal is a place work goes rather than the place work happens.

Where Docsiv fits

Docsiv is the document-native version of option three. The portal carries your brand, with a branded subdomain on Pro and a verified custom domain on Agency. AI can draft from the context you provide, purpose-built editors finish supported types, and clients can approve or sign where the workflow supports it. A portal can be started quickly; the real work is deciding what it owns and moving the active engagement into it. Docsiv is for the second answer.