How to Create a Client Portal for Your Agency (Built for Onboarding)

What a client portal should do for an agency

An agency client portal has two jobs: onboarding (collecting everything you need before work starts) and delivery (sharing progress, files and approvals during the project). Most guides, like Zoom's five-step walkthrough and ManyRequests' customer portal guide, focus on the delivery side: folders, branding and logins. This guide focuses on onboarding, because that's where projects most often stall: the brief is half-filled, the contract sits unsigned in an inbox, and the deposit arrives after the kickoff call.

The step order that gets portals completed

Order the steps so each one makes the next one easier: brief, then files, then contract, then deposit. The brief comes first because it defines the scope the contract refers to. Files come while the client is still in “tell us about you” mode. The contract comes once the scope is clear, and the deposit comes last because paying is the natural end of saying yes.

• Don't open with the payment. Asking for money before the client has invested any effort feels transactional, and it's the step people postpone most.
• Don't put the contract before the brief. A contract without an agreed scope either stays vague or gets renegotiated.
• Make “work starts when all steps are done” explicit. Say it in your proposal and at the top of the portal. Several owners in our client red flags roundup run their queue exactly this way: nothing starts until every piece is in.

Three ways to build it

You can assemble a portal from tools you already use, build it in a workspace tool like Notion, or use software made for client onboarding. The right choice depends on how many new clients you take on and how much of the chasing you want to stop doing yourself.

How to build a DIY client portal in about an hour

If you want to start for free, this setup covers the four onboarding steps with tools most agencies already have. It's slower for the client than a single flow, but it's a real improvement over email.

1. 1Write the brief as a form (Google Forms, Typeform or similar). Keep it to the questions you actually use: goals, deliverables, deadline and why, budget range, who approves, examples they like. Mark the essentials as required. Our free brief generator gives you a starting set.
2. 2Create a shared folder per client with three subfolders: “From you” (brand files, content, access details), “Drafts” and “Final.” Name it “Client name – Project – Year.”
3. 3Prepare the contract in an e-signature tool, with the scope section left to fill from the brief.
4. 4Create a payment link for the deposit in your invoicing or payment tool.
5. 5Put everything on one page in the right order: a short welcome, then the four links numbered 1 to 4, each with one sentence on what to do and how long it takes.
6. 6Send it the day they say yes, with a clear line: “We start as soon as these four steps are done.”

How to get clients to actually complete it

Clients complete portals that feel short, obvious and safe. The biggest drop-off points are a login screen, a long form with no sense of progress, and not knowing why each step matters.

• No account for the client. One link they can open from their phone. Every password screen loses people.
• Show progress. “Step 2 of 4” is enough. People finish what they can see the end of.
• Say how long it takes. “About 10 minutes” on the welcome screen sets expectations.
• Explain the why in one line per step. “We use this to quote accurately” turns a chore into something in their interest.
• Let them save and come back. Brand files are rarely all on hand at the first visit.
• Follow up on a schedule, not on a mood. A friendly nudge a couple of days after sending, and another a few days later, beats chasing when you happen to notice.
• Brand it. Your logo and colors make the portal feel like part of your service, not a third-party tool they have to trust.

Common mistakes

• Copying a 40-question brief from a template. Ask only what changes your quote or your plan. Everything else can wait for kickoff.
• Building the portal for delivery first. File-sharing folders are useful later; a stalled onboarding blocks everything.
• Sending it days after the yes. Momentum is highest right after the client agrees. Send the link the same day.
• Starting work before the deposit. It teaches the client the steps are optional.
• Rebuilding it per client. Keep one master version and duplicate it, or use a tool that does that for you.

Where Fentyr fits

Fentyr is a dedicated version of the onboarding portal described above. You send one branded link; the client fills in the brief, uploads files, signs the contract on screen and pays the deposit through Stripe, with no account to create. When an answer is vague, it asks up to two follow-up questions, and the client can answer by voice. When they finish, you get a kickoff pack (one-page brief, scope, watch-outs and a task list).

Fentyr can also generate the whole flow from your website. Try the free portal generator: paste your site and see your portal in about a minute, no signup. The Free plan covers 2 new clients a month, with the contract and deposit steps locked; they unlock on Starter. Plans are on the pricing page. If you're comparing options, see our list of client onboarding software.