Email Compatibility

Not all email systems are compatible with Duo. You’ll find a list of supported email clients below.

Make sure that your email client is supported before you enroll in MFA/Duo to avoid service interruption. The Duo Help Center (https://help.duo.com) is also available for additional support information.

Client (email program)	Platform	Supported	Notes
Outlook Web App	web	Yes	Use https://office365.ucdavis.edu
Outlook 2016	Windows / Mac	Yes
Outlook 2013	Windows	Yes	Requires Modification: https://support.office.com/en-us/article/Enable-Modern-Authentication-for-Office-2013-on-Windows-devices-7dc1c01a-090f-4971-9677-f1b192d6c910
Outlook 2011 and earlier	Windows / Mac	No	Contact IT support to upgrade to a supported version of Outlook
Outlook	iOS	Yes	The Outlook client (email program) for iOS is available at https://itunes.apple.com/us/app/microsoft-outlook/id951937596?mt=8.
Outlook	Android	Yes	The Outlook for Android client (email program) is available at https://play.google.com/store/apps/details?id=com.microsoft.office.outlook&hl=en.
Built-in Mail*	iOS 11	Yes	After enabling Duo you MUST delete and re-add your email profile, see http://kb.ucdavis.edu/?id=0159. Your email will not be Duo protected until you complete this step after enabling Duo.
Built-in Mail*	iOS 10 and earlier	No	The Outlook client (email program) for iOS is supported. Download Outlook for iOS at https://itunes.apple.com/us/app/microsoft-outlook/id951937596?mt=8
Built-in Mail*	Android	No	The Outlook client (email program) for Android is supported. Download Outlook for Android at https://play.google.com/store/apps/details?id=com.microsoft.office.outlook&hl=en.
Built-in Mail*	Mac OS 10.13 and earlier	No	Use https://office365.ucdavis.edu/
Built-in Mail*	Mac OS 10.14 and later	Yes
Thunderbird	All	No	Use https://office365.ucdavis.edu

*The one that came with your device

Other applications	Platform	Supported	Notes
Skype for Business, Lync 2013, and Exchange Online	Office 2013	Yes	Requires Modification: https://support.microsoft.com/en-ca/help/3082803/info-about-the-allowadalfornonlyncindependentoflync-setting-in-skype-f

NOTE: Thunderbird, Mac Mail, and the Android native mail app are currently compatible with Duo and DavisMail. But in the future, as we continue to strengthen the security of our email platforms, some older email clients will no longer work with Duo and DavisMail. We will inform the community about all changes that will affect their ability to access their email, and we will assist them in upgrading their email client to the most secure, supported versions.

Can I still use Mac Mail? Thunderbird? My native smartphone mail app?

Mac Mail, Thunderbird, and the Android native mail app do not yet support Modern Authentication which is required for Duo MFA. If your phone or computer uses one of those clients, you will need to install a new email client that supports Modern Authentication; good options include the Microsoft Outlook app for Android and iOS, and Microsoft Outlook for Mac and Windows. The "OWA" (Outlook Web App) client for iOS and Android is not the same as the Microsoft Outlook app and does not work with Duo MFA. The iOS native mail app supports Modern Authentication and Duo in version 11 and later, however, after you enable Duo MFA for Office 365 on your iOS device, you will need to remove and re-add your email profile. See http://kb.ucdavis.edu/?id=0159