Direct mail infrastructure, built by print veterans.
We’re building the physical mail layer for the AI agent ecosystem, and because we’re the manufacturer, every piece sent is revenue at 30–40% margin.
Our mission
MailStream was founded by Jeff Kingsford, who built and ran one of the first online printing and marketing companies from 1998 to 2018. After two decades in the industry, the insight was clear: physical mail is still one of the highest-ROI marketing channels, but the infrastructure to send it programmatically barely exists.
Today, there are 12,000+ tools AI agents can use, email, Slack, Stripe, databases. But if an agent needs to send physical mail? Zero infrastructure exists. MailStream is the first and only MCP server for physical mail, purpose-built so AI agents can send postcards and letters autonomously. And because we own the print infrastructure, we’re the manufacturer, not a reseller.
By the numbers
- 24hr
- Turnaround
- 12
- MCP tools
- 25+
- Years in print
- 99.9%
- US coverage
Meet the team
A small team with deep expertise.
MailStream is built by three co-founders with deep roots in print, engineering, and go-to-market. Adrian and Portik lead the team of senior developers shipping API, MCP, and billing infrastructure.
Built from the ground up
Jake Fassnacht, Jeff Kingsford, and Marton Gergely co-founded MailStream to bring physical mail into the AI era. Jeff spent two decades building one of the first online printing companies. Marton leads engineering as CTO, architecting the platform from API to print floor. Jake drives product and operations. Together, they own the entire pipeline, we’re the manufacturer, not a reseller.
Adrian and Portik lead the team of senior developers building the API endpoints, SDKs, MCP server, and billing system that power MailStream day to day. Together, the team is shipping the physical mail layer for the AI agent ecosystem, the first of its kind.
Why MailStream
The unfair advantages.
We built MailStream differently than every other direct mail platform on the market. Here’s why that matters.
Our edge
- We're the manufacturer
- Most direct mail APIs are resellers adding margins on top of third-party printers. We own the print-to-mail pipeline, from digital file to USPS handoff. That means lower costs, faster turnaround, and no middlemen.
- First MCP server for physical mail
- There are 12,000+ MCP servers in the AI agent ecosystem. Zero are for physical mail, except ours. We're building the infrastructure layer that lets AI agents send real mail autonomously, and first movers in MCP tooling tend to stay.
- 24-hour turnaround
- Competitors like Lob quote 3–5 business days. We print and ship within 24 hours. For time-sensitive campaigns, event-triggered sends, or agent-initiated mail, speed is everything.
- AI-native from day one
- We didn't bolt AI support onto a legacy platform. MailStream was designed from the ground up for programmatic and agent-driven workflows, MCP tools, autonomous sending, budget guardrails, and creative generation built in.