GMass
Powerful mail merge and cold email system for Gmail.
GMass provides Gmail Outreach Automation, Automated Follow-up Sequences, Lead Verification through its REST.
Direct Agent Workflow for GMass
• Connect: Give your GMass API Key to Claude Code, Cowork, or your favorite AI agent.
• Automate: Your agent handles Gmail Outreach Automation and Automated Follow-up Sequences directly.
• Execute: No extra software or middleware required for Sales Engagement automation.
Frequently Asked Questions
What does GMass do?
GMass is a sales engagement tool that provides Powerful mail merge and cold email system for Gmail.
How do I use GMass with AI agents?
Connect GMass to agents like Claude Code or Cowork by using its REST and your API Key keys. This allows your agent to perform Gmail Outreach Automation and Automated Follow-up Sequences directly without needing extra software.
Is GMass API free?
Yes, GMass offers a free tier for its API, making it accessible for testing and small-scale projects.
What are the best alternatives to GMass?
Based on features and use cases, the top alternatives to GMass are Mailshake, Mixmax, Agentforce SDR and GetSales.io.
Alternatives to GMass
Mailshake
Cold email outreach platform used by 38,000+ sales professionals.
Mixmax
Sales engagement platform for Gmail and Outlook to drive outbound productivity.
Agentforce SDR
Salesforce's AI-driven platform for building autonomous sales agents.
GetSales.io
Public API for automating LinkedIn outreach and contact management.