Harp vs Salesforge
Salesforge combines cold email with unlimited mailboxes and warm-up, LinkedIn senders, a shared inbox with AI-assisted replies, an MCP server and CLI on its Growth plan, and Agent Frank, an AI SDR sold separately. Harp gives the SDR work to your own agent.
The short answer
If you want email infrastructure, LinkedIn senders and an optional AI SDR from one vendor, Salesforge is built for that. If your own agent should run outbound, with LinkedIn kept in your own Chrome on your Mac, Harp is built for that.
Side by side
| Topic | Harp | Salesforge |
|---|---|---|
| What it is | The MCP harness for pipeline generation: research memory, sequences, sending, replies and LinkedIn, driven by your AI agent | Cold outreach platform with an optional AI SDR (Agent Frank) |
| Whose AI | Your own agent (Claude today) on your own plan; no AI credits | Agent Frank, Salesforge’s AI SDR, on a separate plan |
| Your Google Workspace mailbox: 28-day warm-up, 2 to 6 minutes between sends, recipient working hours, plain text, one-click unsubscribe | Unlimited mailboxes with warm-up | |
| Steps run from your real Chrome on your Mac at the OS level: click navigation, daily limits, a four-week warm-up and a right-person check | LinkedIn senders with social action credits | |
| Agent access | MCP server built for long account lists | MCP server and CLI on the Growth plan |
| Buying | Flat subscription after a short call; set up with you | Public plans from about $40 a month; Agent Frank from $499 a month after a demo |
Two ways to add AI
Salesforge offers its own AI SDR on top of its sending platform. Harp leaves the AI to you: your agent does the research, writing and decisions on your plan, and Harp is the harness around it.
When Salesforge is the better choice
- You want email infrastructure and LinkedIn senders in one self-serve tool.
- You want a vendor’s AI SDR.
- You run several LinkedIn senders.
When Harp is the better choice
- Your own agent should do the SDR work.
- You want LinkedIn from your own browser and machine, with a right-person check.
- You want email replies answered within minutes.
Questions
See Harp on your own outbound
We set up every customer ourselves. Tell us how your team runs outbound today.
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