How to Build a Secure Client Portal for an Agency in 15 Minutes

In the client service industry, client experience (CX) is everything. Yet, many agencies run their client onboarding and deliverable reviews through a disorganized combination of shared Google Drives, Slack channels, email attachment chains, and PDF attachments. Clients lose track of where assets live, and account executives spend hours answering "What is the status of this mockup?" or "Can you resend last month's invoice?"

The solution is a dedicated, secure **client portal**. But traditionally, building one required hiring developers (to link tools like Retool to a database) or paying for complex no-code stacks (like Softr + Airtable + Zapier). Here is how to deploy a branded, secure agency client portal in under 15 minutes using a single prompt-generated system.

Why Share a Portal Instead of a Spreadsheet?

Many agencies try to save time by sharing a filtered view of an Airtable base or Google Sheet. This presents two serious problems:

• Security Risks: Flat sheets do not support strict data segregation. A tech-savvy client can inspect the browser request payload to view records belonging to other clients, or see internal fields (like profit margins or freelancer rates) that you hid in the UI.
• Branding Deficit: Spreadsheets look technical and clinical. A high-value agency needs a clean, branded portal with its logo, custom colors, and intuitive dashboard views.

Kintable solves this by hosting the data in a PostgreSQL backend and serving portals as separate, secure user interfaces. Your internal team works in a database grid; your clients see a secure portal page.

Step 1: Write a Simple Prompt to Generate Your System

Instead of manually wiring tables and forms, describe the portal you want. Use this example prompt:

Step 2: Custom Domain & Brand Mapping

To make the portal feel like an extension of your company, configure co-branding in Kintable's settings:

• Domain Mapping: Point a custom subdomain (e.g., `portal.youragency.com`) to Kintable using simple CNAME configuration. We handle SSL generation automatically.
• Branding: Upload your logo, favicon, and set primary and secondary brand colors.

Step 3: Establish Client Onboarding and Upload Triggers

When a client submits a creative brief or uploads a logo file in the portal, your team needs to know immediately. In Kintable, form submissions are natively linked to database actions. A file upload automatically:

• Attaches the PDF to the client's record.
• Pings the assigned Account Manager on Slack with a download link.
• Initializes a new project record and schedules the kickoff task.

Step 4: Securely Invite Clients via Magic Links

Avoid forcing clients to memorize another password. Kintable client portals support secure email magic links. When you add a client to your database, they receive a link that authenticates them instantly. You can also restrict registration to specific client domains (e.g., only `@acmecorp.com` emails can view Acme's portal), keeping client data isolated.