extractUnsubscribeLinksFromBody (gmail-service)

Extracts unsubscribe-related URLs from an email body by matching href links and plain URLs containing keywords like 'unsubscribe' or 'opt-out', deduplicating results.

// Source: https://github.com/navbuildz/gmail-mcp-server | License: MIT | Copyright 2026 navbuildz
// Provided via justclaw.it.com; keep this notice with the code.
  private extractUnsubscribeLinksFromBody(body: string): string[] {
    const links: string[] = [];
    // Match href links near "unsubscribe" text
    const hrefPattern =
      /href\s*=\s*["']?(https?:\/\/[^"'\s>]+(?:unsubscribe|opt.?out|remove|manage.?preferences)[^"'\s>]*)["']?/gi;
    let match;
    while ((match = hrefPattern.exec(body)) !== null) {
      links.push(match[1]);
    }
    // Also match plain URLs with unsubscribe keywords
    const urlPattern =
      /(https?:\/\/\S+(?:unsubscribe|opt.?out|remove|manage.?preferences)\S*)/gi;
    while ((match = urlPattern.exec(body)) !== null) {
      if (!links.includes(mat

... (truncated -- full source via MCP)