MCP servers · Postmark · MCP server
Connect Gemini CLI to Postmark
One line gives Gemini CLI your Postmark account as tools: 9 endpoints, send email, templates, bounces, called with your own connection. No key in the prompt, a receipt for every call, revoke Gemini CLI's access alone any time.
Three steps
- Create a free 0n3 account and connect Postmark. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Gemini CLI. Google's terminal agent. One command at user scope.
- Ask Gemini CLI: whoami. Then: "Send an email in Postmark".
Install (user scope)
gemini mcp add --scope user --transport http 0n3 https://0n3.app/mcp -H "Authorization: Bearer <your 0n token>"
The line above carries a placeholder; 0n3.app/install mints a real key named for Gemini CLI and fills it in.
What Gemini CLI can then do in Postmark
Send email · Send transactional emails3
Send an email
POST /emailSend a batch
POST /email/batchSend a template
POST /email/withTemplateTemplates · Manage email templates3
List templates
GET /templatesGet a template
GET /templates/{templateId}Create a template
POST /templatesBounces · Track bounces and deliverability1
List bounces
GET /bouncesMore · Everything else this app exposes.2
Get delivery stats
GET /deliverystatsGet a server
GET /serverPostmark in other AI clients
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