Legal Requirements for Email Signatures by Country

Email signatures are subject to various legal requirements depending on your jurisdiction and industry. Non-compliance can result in significant fines. In the EU, GDPR requires that any personal data in signatures (photos, phone numbers) has a legal basis. The eCommerce Directive mandates that business emails include company registration number, registered address, and VAT number. UK companies must include the company registration number, place of registration, and registered office address in all electronic communications per the Companies Act 2006. In the US, CAN-SPAM requires commercial emails to include a physical postal address. While this primarily applies to marketing emails, many organizations include it in all signatures for consistency. Germany has some of the strictest requirements: all business emails must include the company name, legal form, registered office, management board names, and commercial register details. Financial services firms face additional requirements from regulators like the FCA, SEC, and FINRA regarding disclaimers and risk warnings. SigCraft automatically validates signatures against jurisdiction-specific requirements and flags missing elements.