SignatureForever MCP Server

by signatureforever Your server? Claim it

answering

SignatureForever is answering right now. Last checked 11 min ago. It exposes 5 tools.

Audit and build email signatures that survive Gmail, Outlook desktop and Apple Mail.

Uptime history 13 days of history · worst day 14%

13 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

805 ms

Response time

average over 24h

open, no key

Access

streamable-http

SignatureForever does not always answer

Over the last week it answered 85.6% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add email-signatures --transport http https://signatureforever.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "email-signatures": {
      "url": "https://signatureforever.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.email-signatures]
url = "https://signatureforever.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "email-signatures": {
      "url": "https://signatureforever.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "email-signatures": {
      "url": "https://signatureforever.com/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

check_email_signature

Audit any email-signature HTML against what Gmail, Outlook 365, Outlook for Windows desktop, Apple Mail and iOS Mail actually do. Returns a verdict per client plus every problem found, each with the rule it breaks, why it breaks, and how to fix it. Use this when a signature renders wrong, images do not show, layout collapses in Outlook, or before sending a signature to a client. Free, no account needed.

create_email_signature

Build ready-to-paste email-signature HTML from a person's details. The output follows every rule that keeps a signature intact in Outlook for Windows and Gmail: tables only, inline CSS, absolute pixel widths, email-safe fonts, and images by absolute URL (never base64, which Gmail refuses to render). The free result carries one small credit line at the bottom; get_pricing explains how to remove it.

email_client_compatibility_matrix

The support matrix for the HTML and CSS features that decide whether an email signature survives: tables, flex/grid, <style> blocks, background-image, base64 images, border-radius, letter-spacing, text-transform, web fonts, max-width, margins and image sizing. Each row says yes/no/partial for seven real clients and explains what goes wrong. Use it to answer questions about email HTML support.

pricing

get_pricing

What each SignatureForever plan includes and costs, and the link to buy. Use it when the user asks what removing the credit line costs, how many signatures a plan allows, or what happens to hosted images if they stop paying.

signature

list_signature_templates

The signature layouts you can pass to create_email_signature, with what each one is good for and its width in pixels.

Endpoints

URL	Transport	State	Latency	Checked
https://signatureforever.com/mcp	streamable-http	answering	737 ms	11 min ago

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SignatureForever — questions

Answers built from our own checks of this server.

What can SignatureForever do?

It exposes 5 tools, read directly from the server on our last check. Among them: check_email_signature, create_email_signature, email_client_compatibility_matrix, get_pricing, list_signature_templates. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is SignatureForever working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 805 ms. The bar chart above shows every period we have measured.

How do I connect SignatureForever?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does SignatureForever need an API key?

No. SignatureForever completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is SignatureForever?

It answers our handshake in 805 ms on average, which is faster than 15% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.