Classify and route cold email replies using Claude and Instantly.ai Workflow Solution

Workflow overview

Why this workflow matters

Helpful for business development and pipeline building. Improves internal consulting operations and productivity.

Overview : Automatically reads every reply to your cold email campaigns in Instantly.ai, uses Claude AI to understand the intent, and takes the right action . No need ofmanual inbox checking needed. How it works : A lead replies to your cold email in Instantly.ai , this workflow starts automatically. Claude AI reads the reply and labels it: Interested, Not Now, Unsubscribe, or Referral. Each label triggers a different action calendar email, 30-day follow-up, opt-out removal, or referral ask. Every reply gets logged to a Google Sheet automatically. Setup steps : Instantly webhook — In Instantly → Settings → Webhooks, add a new webhook. Paste the URL from the Receive Instantly Reply node and set the trigger to Reply Received. Claude AI — Click the Claude Haiku node, add your Anthropic API key from console.anthropic.com. Costs less than $0.01 per reply. Google Sheets — Create a sheet with these column headers: Timestamp | First Name | Last Name | Email | Company | Reply | Classification | Campaign. Connect your Google account in all four Log to Sheets nodes. Gmail — Connect your Gmail in Send Calendar Link and Send Referral Reply. Replace {{CALENDAR_LINK}} with your booking link. Slack (optional) — Connect Slack in Notify Slack - Hot Lead and pick a channel. Don’t use Slack? Right-click the node → Disable. Instantly re-sequence — In Re-add to Instantly Sequence, add your Instantly API key and replace {{SEQUENCE_ID}} with your follow-up sequence ID. Activate the workflow and send a test reply to confirm everything works.

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