Secure Gmail Automation for VA Triage

Project Description:
I need a developer to build a secure automation that allows a Virtual Assistant to triage my emails without ever seeing my sensitive attachments.

The Workflow:

Filter: When an email with an attachment hits my Gmail, it must be automatically labeled "Private."

Automation: Use Make.com (formerly Integromat) or a custom script to detect these emails.

Strip & Forward: The automation must "strip" the attachment and send only the Subject, Sender, and Body Text into Missive (via API) as a new conversation.

Calendar: Ensure my Google Calendar is correctly integrated into the Missive sidebar for the VA's view.

The Goal:
The VA will see a "text-only" version of my inbox in Missive. They will draft replies and triage messages. I will then review their drafts and send the final response from my Gmail where the original attachments remain safe.

Requirements:

Deep experience with Gmail API and Missive API.

Proficiency in Make.com, Zapier, or Node.js/Python.

Must be able to handle a one-time "bulk triage" of 2,000 existing unread emails.

Strong communication skills—I am looking for a "set it and forget it" solution.

Note: Please explain in your bid how you will ensure the VA's draft in Missive can be sent as a reply to the original sender.