what is the best way to build a custom client portal for an agency?
We are currently managing about 15 agency clients using a mix of Google Drive links, Notion pages, and Slack channels. It looks messy and clients keep losing track of deliverables and invoices.
I want to build a clean, secure client portal where clients log in to see their specific project status, upload files, and view deliverables. What's the easiest platform to build this on without writing custom code?