CompareSide-by-Side Comparison
HeyReach
LinkedIn automation tool for agencies, sales teams, and GTM operators.
VS
MasterInbox
Combine LinkedIn + Email outreach in one unified inbox.
HeyReach
MasterInbox
API Type
REST
REST
MCP Ready
NO
NO
Free Tier
YES
NO
SDKs
None
None
Webhooks
YES
YES
Capabilities
LinkedIn Automation, Outreach Automation, Multi-channel Campaigns
Reply Management, Unified Inbox, Multi-channel Tracking
HeyReach
MasterInbox
API Type
REST
REST
MCP Ready
NO
NO
Free Tier
YES
NO
SDKs
None
None
Webhooks
YES
YES
Capabilities
LinkedIn Automation, Outreach Automation, Multi-channel Campaigns
Reply Management, Unified Inbox, Multi-channel Tracking
API & MCP Analysis
For AI-native operators choosing between HeyReach and MasterInbox, the decision comes down to API accessibility and how easily your agent can interface with each tool.
Neither tool currently offers an official MCP server, so you'll need to use their REST APIs directly. Provide the API documentation to your AI agent and let it build the integration for you.
HeyReach Starter Prompt
"Claude, use the HeyReach API to create a new campaign and add 50 leads from my Clay table."
Support & Guidance
HeyReach vs MasterInbox FAQ
01
Which has a better API for AI agents — HeyReach or MasterInbox?
HeyReach provides a REST API. MasterInbox provides a REST API. Check the comparison table above for a full breakdown of SDKs, webhooks, and capabilities.
02
Can I connect HeyReach or MasterInbox to Claude or Cursor?
Neither has an official MCP server yet, but both have REST APIs. Paste the API docs into your agent and ask it to build the integration.
03
HeyReach vs MasterInbox — which is better for sales automation?
It depends on your stack. HeyReach is "LinkedIn automation tool for agencies, sales teams, and GTM operators." while MasterInbox is "Combine LinkedIn + Email outreach in one unified inbox.". Compare their API capabilities, MCP support, and pricing above to find the right fit for your workflow.