MasterInbox
Combine LinkedIn + Email outreach in one unified inbox.
MasterInbox provides Reply Management, Unified Inbox, Multi-channel Tracking through its REST.
Direct Agent Workflow for MasterInbox
• Connect: Give your MasterInbox API Key to Claude Code, Cowork, or your favorite AI agent.
• Automate: Your agent handles Reply Management and Unified Inbox directly.
• Execute: No extra software or middleware required for Sales Engagement automation.
Frequently Asked Questions
What does MasterInbox do?
MasterInbox is a sales engagement tool that provides Combine LinkedIn + Email outreach in one unified inbox.
How do I use MasterInbox with AI agents?
Connect MasterInbox to agents like Claude Code or Cowork by using its REST and your API Key keys. This allows your agent to perform Reply Management and Unified Inbox directly without needing extra software.
Is MasterInbox API free?
No, MasterInbox is a premium service. You can view their full pricing details at their official website.
What are the best alternatives to MasterInbox?
Based on features and use cases, the top alternatives to MasterInbox are HeyReach, MirrorProfiles, Agentforce SDR and Attentive.
Compare MasterInbox
Alternatives to MasterInbox
HeyReach
LinkedIn automation tool for agencies, sales teams, and GTM operators.
MirrorProfiles
LinkedIn account rental service for automation and outreach.
Agentforce SDR
Salesforce's AI-driven platform for building autonomous sales agents.
Attentive
AI-powered SMS marketing and conversational commerce platform.