Inbox Preview is an MCP server with 4 tools an agent can call, among them get_job, get_screenshot, list_clients. It answers at https://api.powerline.ai/v1/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 4 September 2026; the last check, on 17 October 2026, succeeded.
Render HTML/.eml emails in real Gmail, Outlook & Yahoo web clients and screenshot them
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
get_job | Get the status and screenshots for a preview job. Poll until status is "completed". Inputs: job_id |
get_screenshot | Fetch a rendered screenshot. Returns the image URL for the given job, client, width, and environment (color scheme / images). Inputs: job_id, client, viewport_width, color_scheme, images_disabled |
list_clients | List the email clients this deployment can render right now, with their rendering tier, engine, and capabilities |
submit_preview | Submit an email for rendering across email clients — full HTML, or a complete raw .eml (base64). Provide exactly one of html/eml. Returns a job ID to poll for results. Inputs: html, eml, subject, include_previews, renders |
Every block below points at https://api.powerline.ai/v1/mcp. Pick your client and copy.
claude mcp add --transport http inbox-preview https://api.powerline.ai/v1/mcp
{
"mcpServers": {
"inbox-preview": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.powerline.ai/v1/mcp"]
}
}
}{
"mcpServers": {
"inbox-preview": {
"url": "https://api.powerline.ai/v1/mcp"
}
}
}{
"servers": {
"inbox-preview": {
"type": "http",
"url": "https://api.powerline.ai/v1/mcp"
}
}
}{
"context_servers": {
"inbox-preview": {
"url": "https://api.powerline.ai/v1/mcp"
}
}
}{
"mcpServers": {
"inbox-preview": {
"serverUrl": "https://api.powerline.ai/v1/mcp"
}
}
}{
"mcpServers": {
"inbox-preview": {
"url": "https://api.powerline.ai/v1/mcp"
}
}
}name: Inbox Preview
version: 0.0.1
schema: v1
mcpServers:
- name: Inbox Preview
type: streamable-http
url: https://api.powerline.ai/v1/mcp{
"mcpServers": {
"inbox-preview": {
"httpUrl": "https://api.powerline.ai/v1/mcp"
}
}
}{
"mcpServers": {
"inbox-preview": {
"type": "http",
"url": "https://api.powerline.ai/v1/mcp"
}
}
}{
"mcpServers": {
"inbox-preview": {
"url": "https://api.powerline.ai/v1/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.powerline.ai%2Fv1%2Fmcp&type=streamable_http&id=inbox-preview&name=Inbox%20Preview
It answered our last check on 17 October 2026 in 567 ms. Over 10 checks since 4 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by powerline.ai and served from api.powerline.ai, the vendor's own domain: https://api.powerline.ai/v1/mcp.
4, as returned by the server's own tools/list on 8 September 2026: get_job, get_screenshot, list_clients, submit_preview.
It answered our last check on 17 October 2026 in 567 ms. Over 10 checks since 4 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.powerline.ai/v1/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: ai.powerline. Endpoint host: api.powerline.ai. ARD identifier: urn:air:ai.powerline:mcp:inbox-preview.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.