Automate HubSpot Follow-Ups with Gmail & Slack Alerts

Transform your HubSpot sales process with this intelligent automation that monitors deal activity, sends personalized follow-up emails through Gmail, and keeps your team informed via Slack notifications—all while respecting contact preferences and follow-up limits.

What this workflow does

Running every weekday morning at 9:00 AM, this n8n automation identifies HubSpot deals that have gone stale (no activity for 3+ days) and takes strategic action. The workflow pulls deal information and associated contact details, then cross-references a Google Sheets follow-up log to ensure contacts haven't exceeded the 3-email limit. For eligible prospects, it automatically sends value-based follow-up emails via Gmail—using high-value templates for deals ≥$5,000 and standard templates for smaller opportunities. After sending emails, the workflow updates deal stages in HubSpot, logs activities in Google Sheets, and notifies your sales team through Slack with comprehensive status updates and error alerts.

Use cases

• Sales team automation: Maintain consistent follow-up cadence without manual tracking or missed opportunities
• Deal pipeline management: Prevent valuable prospects from falling through cracks during proposal phases
• Compliance-friendly outreach: Automatically respect opt-out preferences and enforce follow-up frequency limits
• Revenue optimization: Ensure high-value deals receive appropriate attention with customized messaging
• Team coordination: Keep sales managers informed of automated activities and manual intervention needs

Technical details

Built with essential n8n nodes including HubSpot for CRM integration, Gmail for email automation, Slack for team notifications, Google Sheets for follow-up tracking, plus conditional logic and code nodes for intelligent decision-making. The workflow includes robust error handling with Slack alerts and sticky notes for documentation.

Setup requires HubSpot OAuth2 credentials, Gmail configuration, Google Sheets with "FollowUpLog" structure, and Slack webhook integration. Perfect for sales teams using HubSpot who want to automate follow-up sequences while maintaining personalization and compliance standards.