Works With
Build an AI agent that tracks email threads in Gmail, detects unanswered follow-ups, and auto-generates context-aware drafts — one click to send. The follow-up references the original message and adds a new angle instead of a generic 'just checking in'. Send status synced back to HubSpot automatically.
The agent handles the hardest part of follow-up — knowing what to say next. It reads the thread, checks the deal context, and writes a follow-up that adds value instead of adding noise.
Scan threads → detect unanswered → get contact → draft follow-up → sync to HubSpot
Agent scans Gmail for sent threads that haven't received a reply within your defined follow-up window
Full thread content fetched — original email, any prior follow-ups, and the rep's previous angle
HubSpot contact record retrieved — deal stage, last activity, and any notes added since the original email
AI writes a follow-up that references the original message, adds a fresh angle, and proposes a specific next step
Follow-up status, draft sent date, and thread outcome logged to Google Sheets for pipeline visibility
The agent handles the hardest part of follow-up — knowing what to say next. It reads the thread, checks the deal context, and writes a follow-up that adds value instead of adding noise.
Gmail scanned continuously for threads that go unanswered beyond your configured window — 2 days, 5 days, or a custom interval. No leads fall through because a rep forgot to follow up.
AI reads the full thread and the HubSpot record before writing the follow-up. It knows what was said, what angle was already tried, and what stage the deal is at — so the follow-up adds something new.
No 'just checking in' emails. The AI references a new signal — a recent company news item, a question from the original thread, or a different product angle — to give the prospect a reason to reply.
Drafts land in the rep's Gmail draft folder — reviewed and sent with one click. Rep stays in control of what goes out. No emails sent without human approval unless configured for auto-send.
When a follow-up draft is created, HubSpot contact last-activity date is updated and a note added. When the rep sends, status is marked as followed up. Deal stage updates trigger automatically for positive replies.
Every follow-up thread logged to Google Sheets — contact name, original email date, follow-up sent date, and reply outcome. Full pipeline view of which deals are stalling and how many touches they've had.
How the agent connects Gmail's thread API, HubSpot's contact data, and Google Sheets to run a production-grade follow-up pipeline that monitors every open thread and drafts the right message at the right time.
Thread listing via Gmail returns all sent threads with no inbound reply. Full thread content fetched for context. Smart filters exclude internal threads, auto-replies, and threads where a reply has been received but not yet read.
Contact retrieval via HubSpot pulls the full record for the email recipient — deal stage, last activity, deal value, and any notes added since the original email was sent. Used to add deal context to the follow-up.
AI reads thread history and HubSpot context to write a follow-up that avoids repeating previous angles, references something specific, and proposes a clear next step. Draft created as Gmail draft — not sent automatically.
Follow-up log updated via Google Sheets when a draft is created and when the rep sends it. Tracks: contact name, thread subject, draft created date, sent date, and reply outcome. Feeds pipeline visibility reports.
Gmail API failures, missing HubSpot records, and Sheets write errors handled gracefully with retry logic. If HubSpot data is unavailable, draft is created from thread context alone — no follow-up dropped.
OAuth2 for Gmail and HubSpot with automatic token refresh. Gmail access scoped to sent mail and drafts only — agent cannot read other emails in the inbox. All credentials stored encrypted.
Build an AI agent that monitors Gmail threads and generates context-aware follow-up drafts: 1. Thread Scanning — Poll Gmail for sent email threads that have not received a reply after a defined window (e.g. 3 business days). Return all qualifying threads with their full message history. 2. Thread Context — For each unanswered thread, fetch the complete message content: original email, any previous follow-ups sent, and the date of last activity. 3. HubSpot Contact Lookup — Search HubSpot by the recipient's email address. Retrieve: deal stage, deal value, last activity date, last meeting notes, and any open items from previous interactions. 4. Follow-Up Draft — Generate a follow-up email that: - References a specific element from the original message - Adds a new angle (recent company news, a different product benefit, a relevant case study) - Proposes a concrete next step (specific meeting time, a short question, a resource link) - Never uses phrases like "just checking in" or "following up on my last email" Create the follow-up as a Gmail draft — do NOT send automatically. 5. HubSpot Update — Update the HubSpot contact's last activity date and add a note indicating a follow-up draft has been created. 6. Sheets Log — Append a row to Google Sheets: contact name, company, original email date, follow-up draft date, and thread subject. Integrations: Gmail (thread scanning & draft creation), HubSpot (contact data & activity update), Google Sheets (pipeline tracking).
No code. No credit card to start. Production-ready in under 10 minutes.