# Marketing email footer checker > Paste the end of a marketing email to check that it has a visible unsubscribe option, a postal address and a line explaining why the reader gets it, the basics US law and the big inboxes expect; it runs in your browser. Canonical: https://tellnod.com/tools/email-footer-checker Last updated: 2026-10-15 Author: Tellnod team This is an interactive tool. It runs in the browser at the page URL and sends nothing to Tellnod. ## What it checks - A visible way to unsubscribe [S1][S2] - A valid physical postal address (CAN-SPAM) [S2] - A line explaining why the reader gets the email - A link to manage email preferences - A reminder about one-click unsubscribe headers, which pasted text cannot show [S1] ## FAQ ### What must a marketing email footer include? In the US, a clear way to opt out that you honor within 10 business days and a valid physical postal address. Gmail also requires bulk senders to show a visible unsubscribe link and support one-click unsubscribe. ### Does Tellnod add the footer for me? Yes. Every Tellnod campaign gets an unsubscribe link, one-click unsubscribe headers, a preferences link and your postal address automatically. ### Is this legal advice? No. It is a quick pattern check. Rules differ by country; check the laws that apply to you. ## Sources - [S1] Google Workspace Admin Help: Email sender guidelines: (checked 2026-10-15) - [S2] FTC: CAN-SPAM Act compliance guide for business: (checked 2026-10-15)