Postals Mcp
Let an agent send real handwritten USPS postcards to customers or waitlist signups from chat workflows.
Overview
postals-mcp is an MCP server for the Grow phase that lets agents order and send real handwritten USPS postcards through the Postals/Handwrytten API.
What is this MCP server?
- MCP bridge to send physical handwritten postcards (pen and ink) via USPS
- Paid fulfillment at $4.99 per card per project description
- Requires POSTALS_API_KEY (Handwrytten v1.0 or Postals v1.1+)
- Configurable default sender name and US return address via environment variables
- stdio npm package postals-mcp v1.0.0
- $4.99 per card stated in server description
- npm package postals-mcp version 1.0.0
- USPS delivery; real pen-and-ink handwriting per description
Community signal: 1 GitHub stars.
What problem does it solve?
Email and in-app messages are easy to automate, but founders rarely have time to send memorable physical thank-yous or win-back mail from their agent workflows.
Who is it for?
Solo builders running lifecycle experiments who already have USPS-eligible US addresses and accept per-card API billing.
Skip if: Bulk cold mail without consent, non-US fulfillment needs undocumented here, or teams that cannot expose API keys to local MCP configs.
What do I get? / Deliverables
After registration and API key setup, your agent can draft and submit postcard sends with your default sender profile instead of copying addresses into a separate vendor UI.
- Agent-triggered handwritten postcard orders via MCP
- Reusable sender defaults for repeat lifecycle sends
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Journey fit
Physical touchpoints compound retention and surprise-and-delight after launch, which maps to Grow lifecycle work. Lifecycle covers ongoing customer moments—thank-yous, win-backs, and milestones—where mailed postcards fit better than another email.
How it compares
Paid physical-mail MCP integration, not an email automation skill or CRM replacement.
Common Questions / FAQ
Who is postals-mcp for?
Founders and small teams using MCP agents who want programmatic handwritten postcards for retention, thanks, or surprise touchpoints.
When should I use postals-mcp?
Use it during Grow lifecycle campaigns when a physical note supports churn recovery, VIP thanks, or milestone celebration after you have recipient consent.
How do I add postals-mcp to my agent?
Install postals-mcp from npm, set POSTALS_API_KEY and optional POSTALS_SENDER_* variables, and add the stdio server to your Claude Code or Cursor MCP settings.