From Lead to Invoice: Automating the Entire Client Journey

Most service businesses operate their client pipeline through a combination of spreadsheets, manual emails, and collective memory. It works — until it doesn't. Deals fall through cracks. Follow-ups get missed. Onboarding takes three times longer than it should.

Here's how we rebuilt the entire client pipeline for a business consulting firm — from lead capture to final invoice — using Make (formerly Integromat), Notion, and a layer of AI.

The Starting Point

The firm had three consultants handling a combined pipeline of 40-60 active clients. Their process: leads come in by email, get added to a Notion database manually, proposals are drafted in Google Docs, signed contracts uploaded to Dropbox, and invoices sent via FreshBooks. Each step required manual action. Total admin time per client: approximately 4 hours.

The Architecture We Built

Stage 1: Lead Capture → Notion (Automated)

Contact form submissions via their website trigger a Make scenario that creates a new record in Notion's Lead Pipeline database, sends an internal Slack notification to the relevant consultant, and triggers an AI-personalised follow-up email within 3 minutes of submission.

Stage 2: Proposal Generation (Semi-Automated)

When a lead moves to "Proposal" status in Notion, Make triggers a Google Docs template with the client's name, company, and requirements pre-filled. The consultant reviews, edits the scope, and sends — saving 45 minutes per proposal.

Stage 3: Contract & Onboarding (Automated)

Signed contracts (via PandaDoc) trigger an onboarding sequence: welcome email with a branded client portal link, a Notion workspace is created and shared, kickoff scheduling link is sent, and a task list is auto-generated for the consultant.

Stage 4: Invoicing (Automated)

Project completion status in Notion triggers invoice creation in FreshBooks, with the correct line items pulled from the project record. Payment reminders run automatically at 7, 14, and 21 days past due.

The Results

After three months: admin time per client dropped from 4 hours to under 45 minutes. No deals were missed due to follow-up failures. Client satisfaction scores increased (faster response times, more consistent onboarding). The firm took on 30% more clients with the same team.

What This Cost to Build

Make's professional plan: £29/month. Notion team plan: £16/month per user. Total build time: approximately 40 hours including configuration, testing, and training. The efficiency gains paid back the build cost within the first month.

Where to Start

Don't try to automate everything at once. Pick the single highest-friction point in your current process — the task you or your team dreads most — and automate that first. Then expand from there. The goal isn't perfection. It's momentum.