SignatureForever MCP server

• check_email_signaturewrite actionFree

  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_signaturewrite actionFree

  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_matrixwrite actionFree

  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.

• get_pricingFree

  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.

• list_signature_templatesFree

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

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 2662ms17/20
• Tool poisoning5 tool descriptions checked15/15
• Auth qualityopen endpoint exposes 3 write-action tools with no auth3/15
• Maintenanceno repository listed3/15
• Maintainer identityverified namespace with website, no repo4/10

SignatureForever: common questions

Is SignatureForever MCP server safe?

With care: it is graded C, so read the findings first (56/100). Read the SignatureForever safety report

How do I install SignatureForever?

It runs remotely at signatureforever.com. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.

Does SignatureForever need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is SignatureForever maintained?

The latest release is v1.0.0.

Is SignatureForever up?

100% of our last 2 checks got an answer. We check remote servers about four times a day.

What can I use instead of SignatureForever?

Servers from other publishers that do the same job: Fluxmail MCP server, Agent-Native Mail MCP server and Atomic Mail MCP server. Compare all SignatureForever alternatives.