Email signature guides

Practical guides to building, installing, and rolling out Outlook email signatures that render correctly everywhere.

• How to add an email signature in Outlook

  Step-by-step instructions for adding an HTML email signature to new Outlook, classic Outlook, Outlook on the web, and the iOS and Android apps.

• Create email signatures for a whole team from Excel

  How to generate consistent, per-employee Outlook signatures in bulk from a spreadsheet of names, titles, and phone numbers — and deploy them across the company.

• HTML email signature best practices

  Why email signatures break in Outlook and the markup rules that keep them intact: tables over flexbox, inline styles, hosted images, and accessible fallbacks.