Microsoft is adding AI-powered themes to Outlook today. Dubbed “Themes by Copilot,” this AI-powered feature will require a Copilot Pro or business license to add a more personalized look to Microsoft’s email client.

The themes will appear across Outlook for Windows, macOS, iOS, Android, and on the web, and they’re designed to make “Outlook more beautiful and approachable,” according to Microsoft.

You’ll be able to create a theme based on the weather or locations, and they can dynamically update every few hours, each day, weekly, or monthly. “If you’ve enabled location permissions in Outlook, the My Location theme will bring you imagery uniquely inspired by your locale, dynamically updating for you as you head out the door on a trip or vacation,” says Microsoft.

Every AI-generated theme has a wallpaper for the background on the desktop version of Outlook or the top section of the iOS and Android apps. There’s also an accent color that themes the rest of the Outlook client.

Microsoft is also releasing a collection of non-AI-powered themes for everyone without a Copilot license. The collection includes green, red, and purple themes that are available across the web, PC, Mac, and mobile versions of Outlook.