MCP connectors by com.signatureforever
GET /v1/connectors – MCP directory API referenceAudit any email signature and build ones that survive real email clients. check_email_signature takes the HTML of an existing signature and returns a verdict for Gmail web, Gmail Android, Gmail iOS, Outlook 365, Outlook desktop (Windows), Apple Mail and iOS Mail, plus every problem found with the rule it breaks and how to fix it. Free, no account needed. email_client_compatibility_matrix answers what a given client supports across 12 HTML and CSS features that decide whether a signature holds up: tables, flex and grid, style blocks, background-image, base64 images, border-radius, letter-spacing, text-transform, web fonts, max-width, td margins and image sizing. create_email_signature returns ready-to-paste HTML built to those rules: tables only, inline CSS, absolute pixel widths, email-safe fonts, and images by absolute URL rather than base64, which Gmail refuses to render. Also available as a free web tool at signatureforever.com/en/check. Built by VARGER Group LLC.
